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Descriptive Statistics
Page 5
Questions (1,572)
exercise: The average number of sick days an employee takes per year is believed to be about 10. Members of a personnel
4 answers
asked by
yao
3,125 views
Rolinda’s first five Spanish test scores are 85, 85, 60, 62, and 59.
a. Find the mean, the median, and the mode of Rolinda’s
1 answer
asked by
TWO
216 views
A girl scout troop sold cookies to raise funds. Each troop member recorded the number of boxes she sold. The number of boxes
4 answers
asked by
Ember Lovet
1,833 views
Studies shown that gasoline use or compact cars sold in the U.S. is normally distributed, with a mean of 25.5 mpg and standard
2 answers
asked by
sarah
523 views
Given the following frequency distribution, find the mean, variance, and standard deviation.
Class Frequency 31-33 18 34-36 25
3 answers
asked by
Jennifer
569 views
I am working with standard deviation and the empirical rule.
The problem has the heights of basketball players (women) and we
4 answers
asked by
lauren
561 views
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The
5 answers
asked by
Joy Chapman
2,731 views
Find a set of numbers that will satisfy the following conditions:
- the median of a set of 20 numbers is 24. - the range is 42. -
4 answers
asked by
Ariellen
1,911 views
Suppose the final exam scores in a large class is symmetric mound shaped with a mean of 70 points and standard deviation of 10
5 answers
asked by
Anonymous
2,715 views
A sample of n = 5 scores has a mean of M = 12. What is ‡” x for this sample?
4 answers
asked by
Dottie
3,227 views
set of data is normally distributed with a mean of 200 and standard deviation of 50.
· What would be the standard score for a
5 answers
asked by
Laynette
3,601 views
Which is a correct description of the data in the table?
Time Worked (hours) 8 11 10 5 12 8 Earnings ($) 72 99 90 45 108 72 A.
5 answers
asked by
Luffy
1,065 views
In the Dominican Republic in August, the distribution of daily high temperature is approximately normal with mean 86 degrees
4 answers
asked by
Madi
8,246 views
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is
4 answers
asked by
Anonymous
5,317 views
A university has 1,000 computers available for students to use. Each computer
has a 250-gigabyte hard drive. The university wants
3 answers
asked by
Shelby
2,566 views
Calculate SS, variance, and standard deviation for the following population of N _ 7 scores: 8, 1, 4, 3, 5, 3, 4. (Note: The
4 answers
asked by
Liz
2,868 views
The mean is 18.1
The z-score for 13.0 is - 1.7. What is the standard deviation for this data set.
5 answers
asked by
Nicole
2,068 views
A survey of 250 lobster fisherman found that they catch an average of 32 pounds of lobster per day with a standard deviation of
6 answers
asked by
Mark
5,219 views
The distribution of 27 salaries at a small company has mean $35,000 and standard deviation $2,000. Suppose the company hires a
5 answers
asked by
Anonymous
13,071 views
32% of adult internet users have purchased products or services online. For a random sampling of 200 adult users, find the mean,
5 answers
asked by
Kay
4,209 views
Given the sample mean of GPA, the sample SD, and the SE below:
SM: 3.2454 SD: 0.4635 SE: 0.0309 constructa 95% confidence
4 answers
asked by
Sheri
827 views
The scores on the final exam in a course have approximately a bell-shaped distribution. The mean score was 72, the highest score
4 answers
asked by
Chris
1,292 views
If I know that a set of test scores has a mean of 75 and a standard deviation of 8 what can I conclude?
4 answers
asked by
allison
3,287 views
if the average number of textbooks in professors' offices is 16, the standard deviation is 5, and the average age of the
4 answers
asked by
linda
1,945 views
For a set of data with mean 12 and variance 9, approsimately 68% of the values will fall between 6 to 18. Is the true or false
3 answers
asked by
Belinda
1,016 views
A supervisor finds the mean number of miles that the employees in a department live from work. He finds x Overbar = 29 and s =
5 answers
asked by
Jade
382 views
1.On a test the mean is 75 and the standard deviation is 5.
A. What is the probability that a randomly selected score is higher
5 answers
asked by
Gerard
2,110 views
Scores on an english test are normally distributed with a mean of 33.6 and a standard deviation of 8.3. Find the 41st
4 answers
asked by
English Test Scores
2,335 views
Calculate the standard deviation of the data shown, to two decimal places
x 14 3.1 9.1 18.4 28 25.8 8 16.2
4 answers
asked by
vicke
2,419 views
Find the sum of squared deviations, the variance, and the standard deviation of:2,2,0,5,1,4,1,3,0,0,1,4,4,0,1,4,3,4,2,1,0
3 answers
asked by
John P
2,128 views
If a data set has a mean of 10.0 seconds and a standard deviation of 2.0 seconds, what is the Z score corresponding to the time
4 answers
asked by
Desiree
1,993 views
A sample consists of the following n � 6 scores: 2, 7,
4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample.
3 answers
asked by
Nickie
1,584 views
The heights of a large population of students have a mean of 60" with a standard deviation of 3". What is the mean of the
4 answers
asked by
Audrey
1,547 views
A researcher measures eye color for a sample of n = 50 people. Which measure of central tendency would be appropriate to
5 answers
asked by
Lyn
5,402 views
A sample of n = 9 scores is obtained from a population with ƒÝ = 70 and ƒã = 18. If the sample mean is M = 76, then what is
4 answers
asked by
Lyndyc
1,486 views
. The following data give the 2010 gross domestic product (in billions of dollars) for al 50 states. The data entered in
4 answers
asked by
James
1,088 views
A population has an average of 150,000 with a standard deviation of 27,000. A random sample of 81 items is chosen. What is the
4 answers
asked by
anne
690 views
2. Find the variance and standard deviation of the following sample.
0 -5 -3 6 4 -4 1 -5 0 3
3 answers
asked by
omar
1,898 views
A large number of applicants for admission to graduate study in business are given an aptitude test with a resulting mean score
4 answers
asked by
Jill
3,259 views
Among employed women, 25% have never been married. Select 10 employed women at random. What is the mean number of women in such
3 answers
asked by
Sam
1,527 views
women's heights are normally distributed with a mean 63.1 in and standard deviation of 2.5. A social organization for tall
5 answers
asked by
Jenn
1,912 views
A group is studying age distribution of people living in town. The mean age is 45, the modal age is 59, the median age is 56,
3 answers
asked by
luckybee
1,179 views
In a population of exam scores, a score of X = 48 corresponds to z = +1.00 and a score of X = 36 corresponds to z = -0.50. Find
3 answers
asked by
Teresa
1,529 views
A maker has the opportunity to purchase several acres of land that is divided up into several lots for building single-family
4 answers
asked by
Ronnie
901 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
For a population with a mean of 80 and the standard deviation of 12, what is the Z score corresponding to an individual score of
4 answers
asked by
Tara
669 views
a sample of n=25 scores has a mean of M=65 and an estimated standard error of 2 points. What is the sample variance
4 answers
asked by
L
1,583 views
The test scores of students in a class test have a mean of 65 and with a standard deviation of 8. What is the probable
3 answers
asked by
Anonymous
890 views
A sample of 12 measurements has a mean of 24 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14
4 answers
asked by
Nao
3,415 views
Make up a set of at least 12 numbers that have the following landmarks. Maximum: 8 Range: 6 Mode: 6 Median: 5
5 answers
asked by
michelle
513 views
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