A data set about speed dating includes​ "like" ratings of male dates made by the female dates. The summary statistics are nequals=192192​, x overbarxequals=6.526.52​, sequals=1.911.91. Use a 0.050.05 significance level to test the claim that the population mean of such ratings is less than 7.007.00. Assume that a simple random sample has been selected. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim.

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A data set about speed dating includes​ "like" ratings of male dates made by the female dates. The summary statistics are

nequals=192192​,
x overbarxequals=6.526.52​,
sequals=1.911.91.

Use a

0.050.05

significance level to test the claim that the population mean of such ratings is less than

7.007.00.

Assume that a simple random sample has been selected. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim.

Expert Solution
Step 1

Given information-

Sample size, n = 192

Sample mean, x-bar = 6.52

Sample standard deviation, s = 1.91

Significance level, α = 0.05

Hypothesis Formulation-

Null Hypothesis, H0: μ ≥ 7

Alternate Hypothesis, Ha: μ < 7

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