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To test mean job satisfaction - Chi-square

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Hypothesis - To test mean job satisfaction. See attached file for full problem description.

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The expert tests the mean job satisfaction using a chi-square test.

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12.3)
3) Since the calculated value, 2.04 is less than critical value,10.5 we accept H0 .
H0 here says that variances are equal.

13.5)
5)
a)Crimes are being estimated,therefore its dependent variable and police is independent variable
b)Since police is independent variable its taken along x - axis and crimes are taken along y-axis.
c)Correct formula has been used.
d)Coefficient of determination is square of coefficient of correlation.
e)Since r is negative, ...

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