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In past years the mean IQ of enlisted men in the Army was 103. A general claims that due to low pay, the average IQ of new enlisted men is lower than in the past. In a random sample of 60 enlistees, the mean IQ was 98 with a standard deviation of 20. a) At the 8% significance level, what can be concluded about general’s claim? b) What is the p-value of this test?

In past years the mean IQ of enlisted men in the Army was 103. A general claims that due to low pay, the average IQ of new enlisted men is lower than in the past. In a random sample of 60 enlistees, the mean IQ was 98 with a standard deviation of 20. a) At the 8% significance level, what can be concluded about general’s claim?
b) What is the p-value of this test?

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