Mathematics, 12.12.2019 20:31, Morehollie9428

Faced with rising fax costs, a firm issued a guideline that transmissions of 9 pages or more should be sent by 2-day mail instead. exceptions are allowed, but they want the average to be 9 or below. the firm examined 27 randomly chosen fax transmissions during the next year, yielding a sample mean of 9.85 with a standard deviation of 2.89 pages.
(a-1) find the test statistic. (round your answer to 4 decimal places.) the test statistic
(a-2) at the .01 level of significance, is the true mean greater than 9? no / yes
(b) use excel to find the right-tail p-value. (round your answer to 4 decimal places.) p-value

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Faced with rising fax costs, a firm issued a guideline that transmissions of 9 pages or more should...