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The average IQ in America is 100. A researcher wants to test the hypothesis that left-handed...

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Statistics

The average IQ in America is 100. A researcher wants to test thehypothesis that left-handed individuals have different IQs than theaverage American. He administers an IQ test to 8 left-handedindividuals. They have mean 97.4 with a standard deviation of13.

Test the hypothesis (=.05) that left handed individuals havedifferent IQs than the average Ameican.

BE SURE TO ANSWER ALL PARTS OF THE QUESTION AND SHOW YOUR WORKWHEN YOU CAN.

a) What is the appropriate test?

b) State the null Hypothesis (in words and with means).

c) State the alternative hypothesis (in words and withmeans).

d) Find the critical value.

e) Calculate the obtained statistic.

f) Report the results. Make a decision.

g) What does your decision mean?

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