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15. A doctor claims that the proportion of Americans exercising the recommended minimum of 45 minutes per day is less than ten percent. A sample of 550 Americans reveals that 52 of them exercise at least 45 minutes per day. At the 10% significance level test the doctor’s claim.
Claim: ρ < 0.10,
Ho: ρ ≥ 0.10 Ha: ρ < 0.10
z = -0.43, Critical Value = -1.282
The sample data does not support the claim...