You need to figure out how much money you make each week at the sales job. Assume you work a
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Answer:
The p-value for this test is 0.1375.
Step-by-step explanation:
A student believes that the average grade on the statistics final examination was 87. The student wants to test whether the average is different from 87 at 90% level of confidence.
At the null hypothesis, we test if the average is 87, that is:
At the alternate hypothesis, we test if the average is different from 87, that is:
The test statistic is:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
In which X is the sample mean, is the value tested at the null hypothesis,
is the standard deviation of the sample and n is the size of the sample.
87 is tested at the null hypothesis:
This means that
The average grade in the sample was 83.96 with a standard deviation of 12. Sample of 36
This means that
Value of the test-statistic:
Pvalue:
Probability of the sample mean differing of 87, which means that we have a two-tailed test, with t = -1.52 and 36 - 1 = 35 degrees of freedom.
With the help of a calculator, the pvalue is of 0.1375.
The p-value for this test is 0.1375.
the perimeter is 68.8cm
Ok so because this is a rectangle the line directly across (paralell) is equal, so if one line is 16cm, the line parallel to that will also be 16. Then the formula for area is LxW we'd plug in the numbers we know to get 294.4 =16 x W
then we divide 16 by both sides to make it even to get 18.4cm=W. Now we just plug everything in to the perimeter by doing 16 x 2 + 18.4 x 2 to get
