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A consumers group is concerned with the mean cost of dining in a particular restaurant. A...

A consumers group is concerned with the mean cost of dining in a particular restaurant. A random sample of 40 charges (in dollars) per person has a mean charge of $39.7188 with standard deviation of $3.5476. Is there sufficient evidence to conclude that the mean cost per person exceeds $38.00?
Math   Statistics-And-Probability   
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as test statistic falls in rejection region we reject null hypothesis and conclude that mean cost per person exceeds $38.00.

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