Question

1. To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below.

Treatment		Observation
A	20	30	25	33
B	22	26	20	28
C	40	30	28	22

The null hypothesis is to be tested at the 1% level of significance. The p-value is:

2.

Question 12

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Which of the following statements are correct?

Select one:

a. A point estimate is an estimate of the range of a population parameter

b. A point estimate is a single value estimate of the value of a population parameter

c. A point estimate is an unbiased estimator if its standard deviation is the same as the actual value of the population standard deviation

d. All of these choices are correct

3. A two-tailed test is one where:

Select one:

a. results in only one direction can lead to rejection of the null hypothesis

b. negative sample means lead to rejection of the null hypothesis

c. results in either of two directions can lead to rejection of the null hypothesis

d. no results lead to the rejection of the null hypothesis

Answer 1

Applying one way ANOVA on above data"

Source of Variation	SS	df	MS	F	P-value
Between Groups	72	2	36	1.0588	0.3864
Within Groups	306	9	34
Total	378	11

1) p value =0.3864

2)

b. A point estimate is a single value estimate of the value of a population parameter

3)

c. results in either of two directions can lead to rejection of the null hypothesis