Week 7 statistics questions

Answer the following questions:

QUESTION 1

1. Sheila took a test and received a raw score of 86. The sample of scores has a mean of 78 and a standard deviation of 4.

   Convert Sheila?s raw score into a Z score

   Note: Enter only the numeral answer. Do not use decimals points for whole numbers such as “2”. Use decimal points for numbers that are not whole such as “2.5”

QUESTION 2

1. Sheila took a test and received a raw score of 86. The sample of scores has a mean of 78 and a standard deviation of 4.

   Shelia’s Z score can be interpreted as meaning:

    

   Sheila scored far above average on the test.

    

   Sheila scored far lower than average on the test.

    

   Sheila scored about average on the test

QUESTION 3

1. Sheila took a test and received a raw score of 86. The sample of scores has a mean of 78 and a standard deviation of 4.

   Convert Sheila?s Z score into a T score with a mean of 50 and a standard deviation of 10?

   Note: Enter only the numeral answer. Do not use decimals points for whole numbers such as “2”. Use decimal points for numbers that are not whole such as “2.5”

QUESTION 4

1. Sheila took a test and received a raw score of 86. The sample of scores has a mean of 78 and a standard deviation of 4.

   Convert Sheila?s Z score to a standard IQ distribution with a mean of 100 and a standard deviation of 15.