Question

VERY URGENT !!!

Three stock analysts were asked to predict earnings for four different stocks (in 1000 TL ) for the next year. Their predictions are as shown below. Assume that the populations from which the sample drawn are normally distributed. (use 2 digits after decimal point)

	Analyst 1	Analyst 2	Analyst 3
Stock 1	52	46	54
Stock 2	51	37	58
Stock 3	60	40	50
Stock 4	49	45	46

1. Complete the following analysis of variance table.

Source of Variation	SS	Df	MS	F-Ratio
Between Groups (Analysts)G	Yanıt
Between Blocks (Stocks)B	104.67
Error	99.33
Total

2.   At the 0.05 significance level, are the mean earnings differ by analysts?

a) Null Hypothesis is

Ho: Mean earnings according to different analysts are not equal

Ho: Mean earnings according to different analysts are equal

b)  Alternative Hypothesis is

H₁: Mean earnings according to different analysts are equal for at least one pair

H₁: Mean earnings according to different analysts are not equal for at least one pair

c)  F-Ratio is

d) Critical Value of the test at a=5% is

e)  Does it appear at a=5% that population means are different ?

May be

Yes for at least one pair

No

3.   At the 0.05 significance level, are the mean earnings differ by stocks?

a) Null Hypothesis is

Ho: Mean earnings for different stocks are not equal

Ho: Mean earnings for different stocks are equal

b)  Alternative Hypothesis is

H₁: Mean earnings for different stocks are equal for at least one pair

H₁: Mean earnings for different stocks are not equal for at least one pair

c)  F-Ratio is

d) Critical Value of the test at a=5% is Yanıt

e)  Does it appear at a=5% that population means are different ?

May be

Yes for at least one pair

No

Answer 1