Question 1

Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation of 1.75 cups.The number of cups of coffee consumed is normally distributed. What proportion of students consumes an amount equal to or less than 6 cups per day? How many cups would an individual at the 80^th percentile drink?

Accepted Answer

The answer of Students in the psychology department consume an...

Question 2

If the average height for women is normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches,then approximately 95% of all women should be between _____ and _____ inches in height.

Accepted Answer

A) 62.5; 67.7 
B) 60; 70 
C) 57.5; 72.5 
D) cannot determine from the information given

Question 3

Tom,Tina,& Tori took a verbal aptitude test.The test was normally distributed with a mean of 70 and s = 15.Complete the following table.

Accepted Answer

The answer of Tom,Tina,& Tori took a verbal aptitude test.The...

Question 4

Seven students reported the following individual earnings from their sale of wrapping paper: $7,$13,$3,$5,$2,$9,and $3.In this distribution of individual earnings,the mean is _____ the mode and _____ the median.

Accepted Answer

A) equal to; equal to 
B) greater than; equal to 
C) equal to; less than 
D) greater than; greater than

Question 5

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5.The distribution is normal.How many cups of coffee would an individual at the 25th percentile drink per day?

Accepted Answer

A) 4 
B) 5 
C) 6 
D) 7

Question 6

Arithmetic average is to _____ as score occurring with the greatest frequency is to _____.

Accepted Answer

A) mean; median 
B) median; mode 
C) mean; mode 
D) mode; median

Exam 5: Data Organization and Descriptive Statistics

If the average height for women is normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches,then approximately 95% of all women should be between _ and _ inches in height.

Tom,Tina,& Tori took a verbal aptitude test.The test was normally distributed with a mean of 70 and s = 15.Complete the following table.

Seven students reported the following individual earnings from their sale of wrapping paper: $7,$13,$3,$5,$2,$9,and $3.In this distribution of individual earnings,the mean is _ the mode and _ the median.

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5.The distribution is normal.How many cups of coffee would an individual at the 25^th percentile drink per day?

Arithmetic average is to _ as score occurring with the greatest frequency is to _.