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n 2( a) Seat-belt compliance in Massachusetts was 65%) The state wants to know if it has changed. b) Last year, a survey foun
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Answer #1

(a)

Parameter: Seat belt compliance percentage

Ho: p = 0.65 and Ha: p ≠ 0.65

(b)

Parameter: Percentage of employees willing to pay for on-site day care

Ho: p = 0.45 and Ha: p ≠ 0.45

(c)

Parameter: Default rate of regular card customers

Ho: μ = 6.7 and Ha: μ ≠ 6.7

(d)

Parameter: Length of time regular card customers have been with the company

Ho: μ = 17.3 and Ha: μ ≠ 17.3

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