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A marketing researcher drew 10 observations that were drawn from a normal population whose variance was 64. The observations are: 58, 62, 45, 50, 59,...

A marketing researcher drew 10 observations that were drawn from a normal population whose variance was 64.

The observations are: 58, 62, 45, 50, 59, 65, 39, 40, 41, and 52.

Test at the 10% level of significance to determine if there is enough evidence to conclude that the population mean is greater than 45.

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