A business school placement director wants to estimate the mean annual salaries 5 years after students...

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A business school placement director wants to estimate the mean annual salaries 5 years after students graduate. A random sam A manager wants to know whether customers in Taiwan, on average, would spend more than $2,000 per month on the service that i

math Statistics-And-Probability

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Answer 1

Answer #1

The correct option is :

b. None of the other choices

is the correct option.

Test Statistic :

(2400-2000) /1800/ $\sqrt{49}$ =1.56

Critical Value :1.645

b is correct option

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Answer 2

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