Questions LLC
Login
or
Sign Up
Ask a New Question
Normal Distribution
Page 10
Questions (2,033)
True or False
For any normal distribution, the proportion in the tail beyond z = 2.00 is p = 0.0228.
4 answers
asked by
Lyndyc
920 views
Assume that women’s heights are normally distributed with a mean given by µ =
64.6 inches and standard deviation given by σ =
3 answers
asked by
Jacky
1,204 views
the courier service company has found that their time of parcels to client is normally distributed with a mean of 45 minutes and
3 answers
asked by
Anonymous
606 views
Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard
3 answers
asked by
Anonymous
1,379 views
The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the
2 answers
asked by
Tom 6
597 views
IQ scores in a certain population are normally distributed with a mean of 96 and a standard deviation of 12. (Give your answers
4 answers
asked by
Tom613
941 views
Suppose that the test scores for a college entrance exam are normally distributed with a mean of 450 and a standard deviation of
4 answers
asked by
kevin
1,489 views
The weight of adult green sea urchins are normally distributed with a mean 52g and standard deviation 17.2g?
A. Find the
3 answers
asked by
Anonymous
2,058 views
Based on data from the National Center for Health Statistics, N. Wetzel used the normal distribution to model the length of
3 answers
asked by
Lindsey please help
638 views
The heights of young women are approximately normally distributed with a mean of 64.5 inches and a standard deviation of 2.5
3 answers
asked by
Sue
2,152 views
Suppose that, in fact, the blood cholesterol level of all men aged 20 to 34 follows the normal distribution with mean of u = 188
3 answers
asked by
Zachovia
933 views
Over the past 10 years, the local school district has
measured physical fitness for all high school freshmen. During that time,
3 answers
asked by
Nickie
1,818 views
Express Courier Service has found that the delivery time for packages is normally distributed with mean 14 hours and standard
3 answers
asked by
Jessica
1,083 views
At a large dept. store, the avg. number of years of employment for a cashier is 5.7 with a standard deviation of 1.8 years. If
3 answers
asked by
Kelly
857 views
Find the z-score for the standard normal distribution where:
P(z< -a) = 0.2451
3 answers
asked by
Huffette
1,170 views
1)Let X have a normal distribution with mean 6 and standard deviation 3. a) What is the probability that X > 8.7
2)What is the
3 answers
asked by
rachel
537 views
Suppose a college's SAT scores are normally distributed with mean 1000 and standard deviation 1 for students above 1200. What
3 answers
asked by
iroc
1,070 views
For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are
4 answers
asked by
StudentD
1,150 views
The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard
4 answers
asked by
Anonymous
2,100 views
A random sample of size 36 is taken from a population with mean 50 and standard deviation 5. Find P( < 51.5).
4 answers
asked by
dave
3,505 views
The actual weights of bag of pet food are normally distributed.The mean of the weights is 50.0 lb,with a standard deviation of
3 answers
asked by
Anonymous
1,312 views
suppose the replacement times for washing machines are normally distributed with mean 8.6 years and standard devistion of
3 answers
asked by
tara
771 views
The scores on a national achievement test are normally distributed with a mean of 50 and a standard deviation of 10. Out of a
3 answers
asked by
Anonymous
2,088 views
Suppose that the birth weight of newborn babies in the U.S is normally distributed with a mean of 7 pounds and a standard
1 answer
asked by
Angel
1,115 views
For a normal distribution with µ = 200 and ó = 50, what X values form the boundaries for the middle 60% of the distribution?
3 answers
asked by
jau
1,169 views
On standard IQ tests, the mean is 100 and the standard deviation is 13. The results are very close to fitting a normal curve.
4 answers
asked by
Anonymous
1,296 views
If the mean value of the weight of a particular brand of dog food is 20.6 lb and the standard deviation is 1.3, assume a normal
4 answers
asked by
tonja
2,337 views
A manufacturer knows that their items have a normally distributed length, with a mean of 7.3 inches, and standard deviation of
4 answers
asked by
Rhi
1,576 views
A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of 50 hours. If the service
4 answers
asked by
MARIA
5,456 views
a population forms a normal distribution with a mean of u=80 and a standard deviation of o=15. for each of the following
3 answers
asked by
darrell
1,505 views
Suppose that the height of male students at a large university is normally distributed with a mean of 69 inches and a standard
4 answers
asked by
Agnes
1,545 views
What is the standard deviation of a normal distribution, whose mean is 35, in which an x-value of 23 has a z-score of -1.63?
3 answers
asked by
Becky
1,337 views
John drives to work each morning and the trip takes an average of m = 38 minutes. The distribution of driving times is
4 answers
asked by
Anonymous
1,406 views
1. Which of the following statements are correct?
a. A normal distribution is any distribution that is not unusual. b. The graph
3 answers
asked by
Sonia
733 views
Determine the are aunder the standard mnormal curve that lies to the left of
(a) Z= -1.68, (b) Z= -0.28, (c) Z= -1.38, and (d) Z=
4 answers
asked by
Shay
906 views
The lengths of what are considered "1 inch bolts are found to be normally distrubted with a mean of 1.001 inches and a standard
3 answers
asked by
david
530 views
1. The time it takes a student to cycle to school is normally distributed with a mean of 15 minutes and a variance of 2. The
2 answers
asked by
tan
642 views
A random sample of n=36 scores is selected from a population. Will this have a definite normal distribution?
3 answers
asked by
Leticia
698 views
If the heights within a certain subpopulation of people are normally distributed with a mean of 180 centimeters and a standard
2 answers
asked by
Crystal
974 views
If the heights within a certain subpopulation of people are normally distributed with a mean of 180 centimeters and a standard
2 answers
asked by
Crystal
1,086 views
Assume the heights of women are normally distributed with a mean given by 63.6 inches and a standard deviation given by 2.5
3 answers
asked by
Anonymous
1,399 views
The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz.
4 answers
asked by
Deb
2,426 views
Which of the following normal distributions has the smallest spread?
A. A normal distribution with mean 1 and standard deviation
3 answers
asked by
KARINA
2,189 views
1. The amount of pyridoxine (in grams) per multiple vitamin is normally distributed with = 110 grams and = 25 grams. A sample of
3 answers
asked by
Anonymous
850 views
Why might the following not be normally distributed? (a) The time it takes you to drive to the airport, (b) The annual income
3 answers
asked by
Anonymous
407 views
IQ test scores are normally distributed with a mean of 97 and a standard deviation of 11.An individual's IQ score is found to be
4 answers
asked by
Rachel
814 views
For a certain group of individuals, the mean hemoglobin level in the blood is 21.0 grams per milliliter (g/ml). The standard
3 answers
asked by
diandra
1,145 views
what proportion of a normaql distribution is located between each of the following z- score boundaries?
a. z= -0.50 and z = +0.50
4 answers
asked by
John
1,330 views
The tread life of a particular tire is a random variable best described by a normal distribution with a mean of 60,000 miles and
3 answers
asked by
Madison
1,423 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
478 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