Percentage of people who exercise in california

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Reference no: EM1386924

A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national exercise rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and finds that the number who exercise regularly is 31 out of 120.

a) What is X2 obt?

b) What is the df for this test?

c) What is X2 cv?

d) What conclusion should be drawn from these results?

Reference no: EM1386924

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