Topic 11.6

Last updated almost 5 years ago

6 questions

Question 1

Library

Topic 11.6

Last updated almost 5 years ago

6 questions

Question 1

A set of test scores are normally distributed with a mean of 300 and a standard deviation of 18. Between what two scores do 99.7% of the data fall? Write your answer as low number, high number.

Question 2

A set of test scores are normally distributed with a mean of 300 and a standard deviation of 18. What percent of the scores are between 264 and 300?

Question 3

The weights of hammers produced in a factory have a mean of 12.2 ounces and a standard deviation 0.08 ounces. A randomly selected hammer weighs 12 ounces. How many standard deviations is this below the mean?

Question 4

Student A received a score of 445 on a test where the scores are normally distributed with a mean of 450 and a standard deviation of 12. Student B received a score of 170 on a test where the scores are normally distributed with a mean of 175 and a standard deviation of 15. Which student scored better compared to the rest of their
class?

Student A

Student B

Neither

Question 5

Compared to the normal distribution, a distribution graph is wider. This means that

the mean is larger.

the standard deviation is larger.

the standard deviation is smaller.

the mean is smaller.

Question 6

In a distribution graph, the mean is to the right of the median and the mode. This means that the distribution is

right skewed.

left-skewed.

A set of test scores are normally distributed with a mean of 300 and a standard deviation of 18.  Between what two scores do 99.7% of the data fall?  Write your answer as low number, high number.

Question 2

A set of test scores are normally distributed with a mean of 300 and a standard deviation of 18. What percent of the scores are between 264 and 300?

Question 3

The weights of hammers produced in a factory have a mean of 12.2 ounces and a standard deviation 0.08 ounces. A randomly selected hammer weighs 12 ounces. How many standard deviations is this below the mean?

Question 4

Student A received a score of 445 on a test where the scores are normally distributed with a mean of 450 and a standard deviation of 12. Student B received a score of 170 on a test where the scores are normally distributed with a mean of 175 and a standard deviation of 15. Which student scored better compared to the rest of their
class?

Student A

Student B

Neither

Question 5

Compared to the normal distribution, a distribution graph is wider. This means that

the mean is larger.

the standard deviation is larger.

the standard deviation is smaller.

the mean is smaller.

Question 6

In a distribution graph, the mean is to the right of the median and the mode. This means that the distribution is

right skewed.

left-skewed.