Questions LLC
Login
or
Sign Up
Ask a New Question
Normal Distribution
Page 6
Questions (2,066)
Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the
5 answers
asked by
abc
2,004 views
Consider a normal distribution with mean 20 and standard deviation 3. What is the probability a value selected at random from
4 answers
asked by
erin
2,363 views
How would I go about solving these problems?
In Exercise 9 we suggested the model N(1152,84) for weights in pounds of yearling
4 answers
asked by
Courtney
1,472 views
If the average price of a new single family home is $246,300 with a standard deviation of $15,000, find the minimum and maximum
4 answers
asked by
stacy
969 views
the score on an achievement of test given to 1,00,000 students are normally distributed with mean 500 and standard deviation of
4 answers
asked by
Saran
1,060 views
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes
4 answers
asked by
margaret
4,999 views
Find the area under the normal distribution curve to the left of z = 2.35.
3 answers
asked by
Shelagh
2,706 views
Assume that women's heights are normally distributed with a mean given by u=64.6 in
and a standard deviation given by 0=2.8in. a)
6 answers
asked by
angela
7,056 views
Suppose adults in a particular town drive a mean of 65 mph with a standard deviation of 15 mph. Using the normal curve table,
a.W
3 answers
asked by
Jacky
1,740 views
John drives to work each morning and the trip takes an average of µ = 38 minutes. The
distribution of driving times is
4 answers
asked by
Anonymous
1,792 views
jenny is 5'10" tall. the heights of the girls in the school are approximately normally distributed with a mean of 5'5" and a
4 answers
asked by
Confused
656 views
On a test whose distribution is approximately normal with a mean of 50 and a standard deviation of 10, the results for three
3 answers
asked by
Kathy
779 views
From a set of 1000 observations known to be normally distributed, the mean is 534 cm and SD is 13.5 cm. How many observations
4 answers
asked by
Neeraj Bhanot
2,018 views
a normal distribution ha am ean of 80 with a standard deviation of 20. what score separates the highest 15% of the distribution
4 answers
asked by
Leigh
1,601 views
Use the Standard Normal Distribution table to find the indicated area under the standard normal curve.
Q1: Between z = 0 and z =
4 answers
asked by
looking for someone to varify my work please
1,542 views
Savannah earned a score of 43 on Exam A that had a mean of 36 and a standard
deviation of 5. She is about to take Exam B that has
3 answers
asked by
Daniela
411 views
the pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 270
4 answers
asked by
n
724 views
Use the table to answer the question. Note: Round z-scores to the nearest hundredth and then find the required A values using
4 answers
asked by
rose
1,168 views
Use the Empirical Rule to answer each question.
During 1 week an overnight delivery company found that the weights of its parcels
4 answers
asked by
rose
2,032 views
The annual precipitation for one city is normally distributed with a mean of 390 inches and a standard deviation of 3.2 inches.
4 answers
asked by
Gladys
1,262 views
The diameters of bolts produced by a particular machine follow a normal distribution with mean 1.34cm and standard deviation
5 answers
asked by
Raj
1,490 views
how do I find z such it lies 5.3% to the left of the standard normal curve?
4 answers
asked by
Donzella Washington
1,472 views
The equation for a general normal curve with mean μ and standard deviation σ is
y = e−(x − μ)2/(2σ2) σ 2π . Calculate
2 answers
asked by
ryan
1,231 views
The number of vacation days taken by employees of a company is normally distributed with a mean of 14 days and a standard
4 answers
asked by
bob
1,284 views
Find the standard normal area for each of the following, showing your reasoning clearly.
a. P(1.22<z<2.15) b. P(2.00<z<3.00) c.
4 answers
asked by
Kelly
2,526 views
1. The time required to complete a project is normally distributed with a mean of 80 weeks and a standard deviation of 10 weeks.
5 answers
asked by
Gracie
3,198 views
Solve the problem.
Suppose a random variable x is best described by a normal distribution with μ = 60 and Find the z-score that
3 answers
asked by
958 views
Using the standard normal distribution, find the probability that z is less than -1.78 (Points: 6)
0.0375 0.9625 0.9319 0.0384
4 answers
asked by
sonny
1,231 views
Crunchy Corn Chips are packaged in bags labeled "net weight 10 ounces." In fact, the weight of a bag of Crunchy Corn Chips
3 answers
asked by
Stephanie
1,798 views
The systolic blood pressures of the patients at a hospital are normally distributed with a mean of
136 mm Hg and a standard
4 answers
asked by
Emory
3,002 views
A machine fills 64 ounce detergent jugs. It is known that the net amount of detergent poured into each jug has a normal
3 answers
asked by
Riley
1,118 views
Assume that the heights of American women are approximately normally distributed with a mean of 66.5 in. and a standard
2 answers
asked by
Andrea
625 views
In the example in problem 18, using a normal curve table, what is the minimum Z score an architect can have on the creativity
3 answers
asked by
Bravo
887 views
In a normal distribution, 4% of the distribution is less than 53 and 97% of the distribution is less than 65.i.Find the mean and
5 answers
asked by
Raj
707 views
A standard math test was given to 6000 students. The scores were normally distributed with a mean of 420 and a standard
6 answers
asked by
Jacqueline
1,415 views
The weights of 1,000 men in a certain town follow a normal distribution with a mean of 150 pounds and a standard deviation of 15
4 answers
asked by
Farah
3,951 views
The probability that an observation, following a normal distribution, will lie within μ ± 1.3σ is
1 answer
asked by
xalane
392 views
Find the area under the standard normal curve that lies between z = -2.09 and z = 1.98. Note: the graph may not be drawn to
3 answers
asked by
Anonymous
1,577 views
Find the area under the normal distribution curve to the left of z = –1.50.
3 answers
asked by
Shelagh
1,382 views
The serum cholesterol levels for men in in one age group are normally distributed with mean of 178.1 and standard deviation of
4 answers
asked by
Amy
1,109 views
I have no idea on how to answer this question...
"Use technology or a standard normal distribution table to find the area to the
3 answers
asked by
Jim
863 views
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the
3 answers
asked by
Berry
918 views
on the daily run of an express bus, the average number of passengers is 48. the standard deviation is 3. Assume the variable is
4 answers
asked by
Michelle
1,404 views
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,225 per hour
5 answers
asked by
Barbara
2,333 views
for a standard normal curve, find the z-score that separates the bottom 30% from the top 70%
4 answers
asked by
kay
7,005 views
Find the z-scores that separate the middle 40% of the distribution from the area in the tails of the standard normal
2 answers
asked by
yes
1,029 views
Cartons of milk from a particular supermarket are advertised as containing 1 liter, but in fact the volume of the contents is
4 answers
asked by
Edmond Munyengwa
383 views
The number of pieces of popcorn in a large movie theatre popcorn bucket is normally distributed, with a mean of 1720 and a
4 answers
asked by
rwedf
2,322 views
Assume that women’s heights are normally distributed with a mean of 63.6inches and a standard deviation of 2.5inches. If 90
4 answers
asked by
Help
5,492 views
the amount of pyridoxine in grams per multiple vitamin is normally distributed with mean = 110 grams and standard deviation = 25
3 answers
asked by
james
1,541 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (44)
Basic Concepts
Confidence Interval
Confidence intervals
Continuous Distributions
Continuous Probability Distributions
Data Analysis
Data Analysis and Interpretation
Data Analysis and Statistics
Data distribution
Data Distributions
Descriptive Statistics
Distribution
Distribution Analysis
Distribution of Data
Distribution of Variables
Distributions
Educational Statistics
Frequency distribution
Frequency Distributions
Hypothesis Testing
Mathematics/Statistics
Measures of Central Tendency and Dispersion
Population and Sampling
Probability
Probability & Statistics
Probability and Distribution
Probability and Distributions
Probability and Statistics
Probability Calculations
Probability Distribution
Probability distributions
Probability Theory
Random Variables
Sampling
Sampling distribution
Statistical Analysis
Statistical Distributions
Statistical Methods
Statistics
Statistics and Probability
Statistics or Probability
Statistics/Mathematics
Statistics/Probability
Variables