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Descriptive Statistics
Page 8
Questions (1,581)
Question 1 - Use the dataset InkjetPrinters.txt to answer the following questions:
Data was collected on a sample of 20 different
2 answers
asked by
Bo
1,155 views
1.What are the mean,median,mode and range of the data set given the altitude of lakes in feet:-9,-36,-23,-8,-17,-52,-27,and-36?
2
2 answers
asked by
PLEASE HELP ME ASAP
222 views
Assume the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.0 ounces and a standard deviation of 1.3
4 answers
asked by
Kiki
1,455 views
-The following data give the 2010 gross domestic product (in billions of dollars) for all 50 states. (Source: Bureau of Economic
1 answer
asked by
emam
463 views
The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated.
mean = 160
3 answers
asked by
Ana
2,366 views
Please check my responses! ASAP
Consider the following data set: 3,4,6,7,9,9,11 If 5 were added to each of the values, how would
2 answers
asked by
Kara
1,282 views
Q: The mean annual salary for a sample of electrical engineers is $83,500, with a standard deviation
The mean annual salary for a
3 answers
asked by
zeenia
1,127 views
2. High density lipoprotein (HDL) in healthy males follows a normal distribution with a mean of 50 and a standard deviation of
2 answers
asked by
mary
1,349 views
Convert Ken's chest, waist, and hips measurements to z-scores. Which of these measures appears to be the most different from
4 answers
asked by
zan
936 views
The heights of young American women, in inches, are normally distributed with mean mu and standard deviation 2.4 (sigma). I
3 answers
asked by
kim
3,133 views
The stem-and-leaf plot
shows the heights in centimeters of Teddy Bear sunflowers grown in two different types of soil. Soil A
9 answers
asked by
moby
1,327 views
The average for the statistics exam was 72 and the standard deviation was 4. Kelsey was told by the instructor that she scored
3 answers
asked by
Anonymous
1,118 views
In the following two questions, identify which choices would be considered inferential statistics and which would be considered
4 answers
asked by
kitty
923 views
On his midterm exam, Jimmy scored 75
points, which was exactly 2 standard deviations above the mean. If the standard deviation
4 answers
asked by
Diandra
827 views
A sample has a mean of M 40 If a score of X 55 is removed from the sample then the sample mean will increase
2 answers
asked by
thcker
593 views
A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2.
3 answers
asked by
Cameron
1,085 views
2005 2006 2007 2008
Plant 1 20 4 25 10 Plant 2 25 5 5 48 Plant 3 20 8 20 32 Plant 4 43 10 10 47 Plant 5 40 11 15 48 A gardener
3 answers
asked by
shane
680 views
Weights of male mountain lions follow the normal distribution with a median of 150 lb and an interquartile range of 8.2 lb.
Fin
4 answers
asked by
Andrea
586 views
a. Compute the mean, median, and mode.
b. Compute the variance, standard deviation, range, coefficient of variation, and Z
3 answers
asked by
lou
1,343 views
What is the z-score for a test score of 440 in which the test has a normal distribution of N(400, 50)?
4 answers
asked by
Angie
462 views
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height
3 answers
asked by
jassi
381 views
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The
3 answers
asked by
Scott
1,426 views
A gallup poll of 1236 adults showed that 14% believe that bad luck follows if your path is crossed by a black cat, so n=1236 and
3 answers
asked by
marie
829 views
in a distribution of 160 values with a mean of 72,at least 120 fall within the interval 67-77. approximately what percentage of
4 answers
asked by
ellen
1,333 views
Henry's z-score on his reading test was 1.27. The class average was 60, the median was 58.5 and the variance was 6.2. What was
3 answers
asked by
Nicholas
549 views
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height
3 answers
asked by
Erik
656 views
sample was obtained from a population with unknown parameters. scores: 6, 12, 0, 3, 4
compute the sample mean and sandard
3 answers
asked by
T
1,151 views
In a particular hospital, 6 newborn babies were delivered yesterday. Here are their weights (in ounces):
112, 96, 109, 126, 99,
2 answers
asked by
Rachal
654 views
The heights of the students in a statistics class are approximately normal with mean 68 inches and a standard deviation of 2.75
2 answers
asked by
Alex
906 views
the mean of adult men is 172 pounds with a standard deviation of 29 pounds. ask 20 men thier weight and use excel to calculate
3 answers
asked by
natasha
568 views
Find the range, standard deviation, and variance for the following sample data:
98, 2, 53, 61, 15, 87, 63, 63, 91, 29, 96, 79,
4 answers
asked by
mary, can't figure out calculation, please show your calculations for all questions listed above a-e
1,295 views
It has been reported that 83% of federal government employees use email. If a sample of 200 federal government employees is
3 answers
asked by
Anonymous
2,048 views
the amount of time spent in North American adults watching television per day is normal distributed with a mean of 6 hours and a
4 answers
asked by
Marcus
481 views
For a normally distributed distribution of variable x, where the mean is 50, and standard deviation is 2.5, calculate: a) the
4 answers
asked by
Ally
1,120 views
i am trying to find this answer there are 3 questions.
1. micheal kept the following records of her phone bills for 12 months:
3 answers
asked by
george
544 views
A professor has noticed that, even though attendance is not a component of the final grade for the class, students that attend
4 answers
asked by
Carrie
1,104 views
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
a. Compute the range. b. Compute
4 answers
asked by
Dan
1,418 views
The standard deviation of a data set is 4. What is the variance?
(1 point) Responses 2 2 4 4 8 8 16
11 answers
asked anonymously
87 views
a sample of n=25 scores has a mean of M=60 and a std dev of s=12. Find the z-score corresponding to each of the following scores
2 answers
asked by
annabelle
820 views
For a sample with a mean of M=85, a score of X=90 corresponds to a z-score of z=1.00. What is the sample standard deviation?
3 answers
asked by
Andrew
888 views
Construct a frequency distribution of the ages that 25 randomly selected smokers started smoking:
26 26 25 17 16 16 14 17 21 16
3 answers
asked by
Rose
421 views
Select all that apply
Which of the following represents the expected value? Multiple select question. σ2 μ Var(X) σ SD(X) E(X)
2 answers
asked anonymously
48 views
A variable has a mean of 1,520 and a standard deviation of 80.
a. Using Chebyshev's theorem, what percentage of the observations
2 answers
asked anonymously
91 views
The monthly telephone usage (in minutes) of 30 adults is listed below. Find the interquartile range for the telephone usage
7 answers
asked by
AOL
54 views
(a) Compute the z-score corresponding to the individual who obtained 35.2 miles per gallon. Interpret this result.
The
7 answers
asked by
AOL
52 views
Given the following observations from a sample, calculate the mean, the median, and the mode. (Round "mean" to 2 decimal
2 answers
asked anonymously
35 views
Consider the following sample data:
x 25 18 20 12 22 y 27 20 25 15 22 picture Click here for the Excel Data File a. Calculate the
2 answers
asked anonymously
75 views
Consider a sample with 10 observations of −3, 0, 5, 10, 12, −3, −2, 0, −3, and 8. Use z-scores to determine if there are
2 answers
asked anonymously
64 views
Data with 150 observations are drawn from a bell-shaped distribution with a mean of 30 and a standard deviation of 7.
2 answers
asked anonymously
69 views
To determine what effect the salespeople had on purchases, a department store polled 700 shoppers as to whether or not they had
4 answers
asked by
Kimberly
3,178 views
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