Calculus and Above

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The annual profit for your...

The annual profit for your organisation last year was £1203, per employee.

The average for the sector was £1228 per employee. You need to know if

there is evidence that your organisation is not as profitable, on average,

as your competitors. The standard deviation for the sector is £104 per

employee.

Question 1. State H0 and H1 for the test to check this?

Assuming that annual per employee profit follows a Normal distribution,

the resulting P-value for the test is, P= 0.405 (3 d.p.):

Question 2. Based entirely on this P-value, what would you conclude from

the test?

Question 3. What is the probability of getting a profit per employee of

£1203, or less, when there is no difference between that for your company

and the industry average?

Question 3. If your annual per employee profit was such that the test had

resulted in a P-value given by P=0.032 and you were testing at the a=0.01

significance level, what would you conclude and why?

Question 4. If you chose to reject H0 but H0 was actually true, would you

be making a Type I or Type II error?

Question 5. What assumptions have you made about the annual per employee

profit in this test?

The average for the sector was £1228 per employee. You need to know if

there is evidence that your organisation is not as profitable, on average,

as your competitors. The standard deviation for the sector is £104 per

employee.

Question 1. State H0 and H1 for the test to check this?

Assuming that annual per employee profit follows a Normal distribution,

the resulting P-value for the test is, P= 0.405 (3 d.p.):

Question 2. Based entirely on this P-value, what would you conclude from

the test?

Question 3. What is the probability of getting a profit per employee of

£1203, or less, when there is no difference between that for your company

and the industry average?

Question 3. If your annual per employee profit was such that the test had

resulted in a P-value given by P=0.032 and you were testing at the a=0.01

significance level, what would you conclude and why?

Question 4. If you chose to reject H0 but H0 was actually true, would you

be making a Type I or Type II error?

Question 5. What assumptions have you made about the annual per employee

profit in this test?

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