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Week 7 statistics questions

aNSWER THE FOLLOWING STATISTICS QUESTIONS

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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”

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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:

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Sheila scored far above average on the test.

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Sheila scored far lower than average on the test.

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Sheila scored about average on the test.

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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”

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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.

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”

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