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bloodgif8921
03.12.2019 •
Mathematics
Faced with rising fax costs, a firm issued a guideline that transmissions of 7 pages or more should be sent by 2-day mail instead. exceptions are allowed, but they want the average to be 7 or below. the firm examined 24 randomly chosen fax transmissions during the next year, yielding a sample mean of 8.52 with a standard deviation of 3.81 pages. find the test statistics.
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Ответ:
t = 1.9287
Step-by-step explanation:
Let
be the average number of pages should be sent by 2-day mail instead.
As per given we have,
Sample mean :![\overline{x}=8.52](/tpl/images/0400/0388/cbf68.png)
Sample standard deviation : s=3.81
sample size : n= 24
Since , the sample size is less than 30 and populations standard deviation is unknown , so we use t-test.
The test statistic for population mean :-
Hence, the test statistics : t = 1.9287
Ответ:
Step-by-step explanation:
Hope this helps u!!