A Researcher in Interested in Whether Students Who Are Musicians $\sigma$

question 52

Multiple Choice

A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population.The researcher predicts that playing a musical instrument is associated with higher intelligence test scores.The researcher selects a sample of 75 musicians from local high schools and gives them an intelligence test.The mean for the sample is 105.The mean for the general population (µ) is 100 with a standard deviation ( $\sigma$ ) of 15.What is z_obt for this sample?

• A).33
• B)1.89
• C)2.89
• D)3.25

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Definitions:

Conversion Control Sequence

A Conversion Control Sequence is part of programming syntax used to format output or convert data types explicitly.

%d

%d is a format specifier in C and C-like languages that is used in string formatting functions to represent an integer variable.

\n

\n is a escape sequence that represents a newline character, used in string literals to move the cursor to the next line when outputting text.