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IQ scores are normally distributed. You give your friends this test and they score 112, 122, 115, 97, and 101. a. Use this data to

IQ scores are normally distributed. You give your friends this test and they score 112, 122, 115, 97, and 101.

a. Use this data to estimate the average IQ score in general. Use confidence level 98%.

b. If another resource claims the average IQ score is 88, are your friends significantly different than this stated average? Justify your answer with statistical reasoning.

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