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An airline has a policy of booking as many as 22 persons on an airplane that can seat only 21. ( past studies have revealed that
1 answer
asked by
Matt
313 views
Suppose a certain entrance exam has scores that are normally distributed with a mean score of 78 and a standard deviation of 7.
2 answers
asked by
Adonis
692 views
Question : The length of time(in hundreds of hours) for the failure of a transistor is a random variable Y with distribution
1 answer
asked by
Ashley
492 views
Question :
The length of time(in hundreds The length of time(in hundreds of hours) for the failure of a transistor is a random
1 answer
asked by
Ashley
319 views
1. A student gets the following grades in his 5 subjects: 87 for calculus; 82 for Physics; 79 for chemistry; 81 for English; and
4 answers
asked by
Riz
972 views
An unfair coin is weighted so that the expected number of tails before the first head is 3.what is the standard deviation of the
1 answer
asked by
Amanda
469 views
Does anyone know if you pay for chegg it actually does give you homework answers. I’m a senior and need to class to graduate
1 answer
asked by
Lyssa
252 views
Your sock drawer if full of unmatched socks. There are 4 white sock, 4 brown socks, and 4 green socks. You randomly pick one
3 answers
asked by
Presley
462 views
8. A sample of n=7 scores has a mean of X= 9. One score in the sample is
changed from X=19 to X=5. What is the value for the new
1 answer
asked by
Anonymous
183 views
Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If we want to estimate this
2 answers
asked by
Heaven Baier
553 views
For the same population, find the score (X value) corresponding to each of the following z-scores.
z = -2.00 z = 1.50 z =
1 answer
asked by
Ha P
204 views
In a family with 7 children what is the probability of having 5 boys and then 2 girls in that order
2 answers
asked by
Brian
822 views
Suppose the following: According to a fixed statistical model , a pair of hypotheses and , and a -level test of the form
we
3 answers
asked by
Af
274 views
Roll two standard dice and add the numbers. What is the probability of getting a number larger than 4 for the first time on the
3 answers
asked by
Anonymous
274 views
The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed an
1 answer
asked by
Anonymous
415 views
The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed an
1 answer
asked by
Fabian
269 views
There are 100 males and 120 females in the graduating class of alocal high school 35 % of
1 answer
asked by
Amanuel
185 views
What 4 numbers has standard deviation of 2 and then another 4 numbers has a standard deviation of 8? Thank you!!
1 answer
asked by
Heyy
153 views
The number of hours per weeek that the television is turned on is determined for each family in a sample. The mean of the data
3 answers
asked by
Maddie
636 views
A courier service company has found that their delivery time of parcels to clients is normally distributed with a mean of 22
1 answer
asked by
Nelly
287 views
State whether the data described below are discrete or continuous, and explain why.
The number of pieces of mail a person
4 answers
asked by
Noneya
1,626 views
Construct the cumulative frequency distribution for the given data.
Daily Low: Frequently: 35-39 2 40-44 3 45-49 5 50-54 12 55-59
2 answers
asked by
B)
729 views
np >= 5 and nq >= 5 , estimate P(at least 11) with n = 13 and p = 0.6 by using the normal distribution as an approximation to
1 answer
asked by
Goosy
439 views
You intend to estimate a population proportion with a confidence interval. The data suggests that the normal distribution is a
1 answer
asked by
Mark
293 views
A bag contains 4 red marbles, 7 blue marbles, and 3 green marbles. If two marbles are
chosen randomly without replacement, what
1 answer
asked by
Jess
279 views
what chip amount represents the 67th percentile for the bag weight distribution
1 answer
asked by
Anonymous
209 views
The yearly rainfall in Regina, Saskatchewan follows a normal distribution with mean 384
mm and standard deviation o. In 10% of
1 answer
asked by
Ojo
221 views
how to draw a flow chart to input the score of students in 8courses and find the average
1 answer
asked by
Emma
192 views
the following words would produce the greatest number of different five - letter arrangements?
TESTS STOPS TEARS
1 answer
asked by
Sarah
96 views
Assume the market research department has gathered data below from a random sample of 759.
Location Female Male Suburban 196 173
4 answers
asked by
Anonymous
103 views
Assume the market research department has gathered data below from a random sample of 759.
Location Female Male Suburban 196 173
2 answers
asked by
Sarah
90 views
The mean is I=15.2 and the standard deviation is o=.9. Find the probability that x is between 14.3 and 16.1.
1 answer
asked by
Ryan
85 views
The assets (in billions of dollars) of the four wealthiest people in a particular country are 46, 25, 22, 16. Assume that
1 answer
asked by
Kenya
158 views
For X~N(10,3), find P(X=11):
1 answer
asked by
Cleo
66 views
Find the probability that the mean of a random sample of 25 elements from a normally
distributed population with a mean 90 and
1 answer
asked by
Zaituna
96 views
Given a random sample of 144 with a mean of 100 and a standard deviation of 60 is taken
from a population of 1000. Find the
1 answer
asked by
Zaituna
72 views
Here is the five number summary of distribution of cigarettes taxes in cents
1 answer
asked by
Anonymous
60 views
The standard deviation for a population is σ = 15.3. A sample of 36 observations selected from this
population gave a mean equal
1 answer
asked by
Godciah
123 views
A primary school teacher has 2 red balls , 2 blue balls, 2 yellow balls , 3 green balls , in how many ways can 9 coloured balls
1 answer
asked by
Ndingoho
171 views
The variance of 40 values is 100. What is the standard deviation
1 answer
asked by
Anonymous
57 views
The variance of 40 values is 100.what is the standard deviation
1 answer
asked by
Anonymous
51 views
Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of
1 answer
asked by
Lucas
98 views
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on
1 answer
asked by
Szzjkzz
136 views
How long did real cowboys live? One answer may be found in the book The Last Cowboys by Connie Brooks (University of New Mexico
1 answer
asked by
Szzjkzz
91 views
Does the frequency distribution given appear to be normal?
Score Frequency 65-69 4 70-74 5 75-79 6 80-84 4 85-89 6 90-94 4 95-99
1 answer
asked by
Enna
100 views
A circle is divided into 9 uneven pies shaped pieces. Each section is labeled 1, 2, ..., 9 the circle is then spun and the
1 answer
asked by
E
83 views
Suppose there is a 16.4% probability that a randomly selected person aged 25 years or older is a jogger in addition there is a
1 answer
asked by
Wanda
95 views
Is the following a probability model? What do we call the outcome “red”?
Color red 0,green 0.1,blue 0.15, brown0.25,yellow
1 answer
asked by
Wanda
82 views
Let the sample space be s={1,2,3,4,5,6,7,8,9,10} suppose the outcomes are equally likely compute the probability of the event E=
1 answer
asked by
Wanda
83 views
List the outcomes in f or g
1 answer
asked by
Wanda
58 views
A probability experiment is conducted in which the sample space of the experiment is s= 2,3,4,5,6,7,8,9,10,11,12,13 event f=
2 answers
asked by
Wanda
96 views
Fill in the blank
Two events e and f are ? If the occurrence of event e in a probability experiment does not affect the
1 answer
asked by
Wanda
80 views
Suppose that events e and f are independent p(f)=0.7 and p(f)=0.8 what is the p(e and f)
1 answer
asked by
Wanda
86 views
About 11%of the population of a large country is hopelessly romantic if two people are randomly selected what is the possibility
1 answer
asked by
Wanda
106 views
Suppose that e and f are two events and that p(e)=0.1 and p(fIe)=0.4 what is p(e and f)
1 answer
asked by
Wanda
81 views
To test H0: =60 versus h1:<60 a random sample of size n= 23 is obtained from a population that is known to be normally
1 answer
asked by
Wanda
87 views
If the researcher decides to test this hypothesis as the a=0.05 level of significance determine the critical values although
1 answer
asked by
Wanda
98 views
Use n=6 and p=0.3 to complete parts a through d below
A) construct a binomial probability distribution with the given parameters
1 answer
asked by
Wanda
114 views
State the criteria for a binomial probability experiment
Choose the correct answer Each trial has two possible mutually exclusive
1 answer
asked by
Wanda
114 views
State the criteria for a binomial probability experiment
Choose the correct answer Each trial has two possible mutually exclusive
3 answers
asked by
Wanda
119 views
The relative frequency histogram represents the length of phone calls on George’s cell phone during the month of September
1 answer
asked by
Wanda
123 views
266 and 16 days
Provide a second interpretation of the area using the given values The probability that a randomly selected human
1 answer
asked by
Wanda
82 views
The figure to the right represents the normal curve with (backward 4)=266 days and zero with a tail =16 days the area between
1 answer
asked by
Wanda
78 views
The figure to the right represents the normal curve with (backward 4)=266 days and zero with a tail =16 days the area between
1 answer
asked by
Wanda
84 views
P(x>37)=?
2 answers
asked by
Wanda
131 views
Assume that the random variable x is normally distributed with mean equaling 50 and standard deviation equaling 14 compute the
1 answer
asked by
Wanda
73 views
Draw a normal curve with the area corresponding to the probability shaded choose the correct graph below
56 66 56 66 56 66 A) b)
1 answer
asked by
Wanda
94 views
Assume the random variable x is normally distributed with a mean of 50 and standard deviation of 7 find the 77th percentile
The
1 answer
asked by
Wanda
121 views
The probability that a randomly selected fertilized egg hatches in less than 20 days is
1 answer
asked by
Wanda
101 views
If the experiment is for 21 days and out of a hundred fertilized eggs are randomly selected how many Would it be?
1 answer
asked by
Wanda
70 views
The probability that a randomly selected fertilized egg takes over 22 days to hatch is
1 answer
asked by
Wanda
101 views
Determine the critical values for (s) for a left tailed test of a population mean at a=0.05 level of significance based on a
1 answer
asked by
Wanda
120 views
Determine the critical values ( s) for a left tailed test of a population mean at the a=0.05 level of significance based on a
1 answer
asked by
Wanda
81 views
Determine the critical values (s) for a two tailed test of a population mean at the a=0.10 level of significance based on a
1 answer
asked by
Wanda
100 views
A credit score is used by credit agencies such as mortgage companies and banks to assess the creditworthiness of individuals
1 answer
asked by
Wanda
142 views
At one point the average price of regular unleaded gasoline was 3.44 per gallon Assume that the standard deviation price per
1 answer
asked by
Wanda
101 views
The following data represent the living situation of newlyweds in a large metropolitan area and their annual household income.
1 answer
asked by
Wanda
84 views
Determine the individuals who will be administered the survey randomly select a number from 1 to k suppose the we randomly
1 answer
asked by
Wanda
117 views
An insurance company crashed four cars of the same model at 5 miles per hour the costs of repair for each of the crashes were
2 answers
asked by
Wanda
152 views
The average score of all golfers for a particular course has a mean of 60 and a standard deviation of 4 suppose 64 golfers
1 answer
asked by
Wanda
103 views
The probability that the mean of a random sample of 23 time intervals is more than 94 minutes is approximately?
1 answer
asked by
Wanda
68 views
How likely are the results of your sample if the population of voters in the town in favor of the referendum is 0.48
1 answer
asked by
Wanda
58 views
Construct a 95% confidence interval about if the sample size n is 61
1 answer
asked by
Wanda
77 views
Construct a 99% confidence interval about if the sample size n is 34 lower bound upper bound
3 answers
asked by
Wanda
99 views
Compare the results to those obtained in part a how does increasing the level of confidence affect the size of the margin of
3 answers
asked by
Wanda
88 views
If the sample size is 13 what condition must be satisfied to compute the confidence interval?
3 answers
asked by
Wanda
96 views
A nutritionist wants to determine how much time nationally people spend eating and drinking suppose for arándome sample of 978
1 answer
asked by
Wanda
96 views
A histogram of time spent eating and drinking each day is skewed right. Use this result to explain why a large sample size is
1 answer
asked by
Wanda
171 views
Determine and interpret a 95% confidence interval for the mean amount of time Americans age 15 or older spend eating and
1 answer
asked by
Wanda
104 views
Web crawlers need to estimate the frequency of changes to Web sites to maintain a current index for Web searches. Assume that
1 answer
asked by
Layal
112 views
In a binomial distribution the mean is 3 and standard deviation is 1.5, find the parameters of binomial distribution.
4 answers
asked by
Muhammad bin abbas
128 views
In a random experiment of rolling a die, let A be the event that an even number occurs and B be the event that a multiple of 3
1 answer
asked by
Muhammad bin abbas
97 views
the probability of tossing ten dimes and getting all heads or all tails?
2 answers
asked by
Joseph Griffin
100 views
What is the probability of tossing ten dimes and getting 50% heads and 50% tails on one toss?
2 answers
asked by
Joseph Griffin
109 views
Find the indicated z score. Imagine that a graph depicts the standard normal distribution with mean 0 and standard deviation 1.
S
1 answer
asked by
Billy jo
81 views
Which of the following would be considered a biased estimator
A) median B) mean C) proportion D) variance
2 answers
asked by
Bobby billy
62 views
A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard
1 answer
asked by
Bro
61 views
1.A recent poll of 1800 people showed that 35% believe gas prices will go down. Find the best point estimate of the proportion
3 answers
asked by
Levileft1
99 views
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