It is believed that the productivity of the newly hired salesmen is different from 470 boxes. To test this belief at the 5% significance level. A random sample of 40 salesmen has a mean of 450 boxes and a standard deviation of 50 boxes.

Hypothesis Test: Mean vs. Hypothesized Value
	470.00	hypothesized value
	450.00	mean boxes
	50.00	std. dev.
	7.91	std. error
	-----	n
	-----	df
	-----	t
	.0156	p-value (two-tailed)
	------	confidence interval 90.% lower
	------	confidence interval 90.% upper

Complete the missing values of above the Mega-Stat output, and use it to solve the following questions:

(Write your solution explicitly)

1. Write the null Ho and alternative hypotheses H1

1. Verify the assumptions you need to make the test.

2. Test the hypothesis is (a) using P-value

3. Write the decision in statement of the test you did in (c)

4. Find Critical value of the statistical test in part (a), with 5% significance level (using the tables)

df =

Critical value =