Answer to question ii ?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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Answer to question ii ?

 

Tuesday Thursday
1 2.46 2.05
2 2.25 2.01
3 1.46 1.94
4 2.04 2.35
5 2.28 1.69
6 3.37 2.09
7. 1.77 0.99
8 1.78 1.65
9 2.07 1.68
10 1.9 1.96
11 2.88 1..52
12 2.13 1.32
13 3.28 1.26
14 1.47 3.02
15 2.59 1.23
16 1.97 1.09
17 2.79 2.58
18 2.93 2.43
19 2.37 2.3
20 2.34 2.01
21 3.67 1.09
Transcribed Image Text:Tuesday Thursday 1 2.46 2.05 2 2.25 2.01 3 1.46 1.94 4 2.04 2.35 5 2.28 1.69 6 3.37 2.09 7. 1.77 0.99 8 1.78 1.65 9 2.07 1.68 10 1.9 1.96 11 2.88 1..52 12 2.13 1.32 13 3.28 1.26 14 1.47 3.02 15 2.59 1.23 16 1.97 1.09 17 2.79 2.58 18 2.93 2.43 19 2.37 2.3 20 2.34 2.01 21 3.67 1.09
Let HTue and uThu be the mean price of generic eggs in a discount supermarket on Tuesday and
Thursday respectively. A random sample of 21 discount supermarkets in Melbourne were selected.
On a randomly selected Tuesday the price of generic eggs was recorded for each of the selected
supermarkets and then recorded again on the following Thursday (recorded in $). It is claimed that
the prices of generic eggs are different on Tuesday and Thursday respectively. The data is stored in
the file grocery.txt. Assuming the prices between each supermarket location are independent,
complete the exercises below.
Exercise 1
It is claimed that the mean prices of generic eggs at a discount supermarket on Tuesdays and
Thursdays are different.
One
COne
What is the appropriate hypothesis test to use in this
i)
situation?
sample
Paired samplet-sample t-
Z-test
t-test test
test
Compute the absolute value of the test statistic for this
ii) hypothesis test. Write you answer to at least 3 decimal
places in the space provided.
Select the null distribution of the test statistic. That is, the O
distribution of the test statistic assuming Ho is true.
t(21) t(40)t(41) t(20) N(0, 1)1(22)
Compute the P-Value for this hypothesis test. Write you
iv)
answer to at least 3 decimal places in the space provided.
Select the appropriate statistical outcome for the test
v)
when a =
Do not reject CAccept
Reject
0.05.
Но
Но
Но
Select the appropriate statistical outcome for the test
Reject
vi)
when a =
Ассept
Но
Do not reject
Но
0.01.
Но
Transcribed Image Text:Let HTue and uThu be the mean price of generic eggs in a discount supermarket on Tuesday and Thursday respectively. A random sample of 21 discount supermarkets in Melbourne were selected. On a randomly selected Tuesday the price of generic eggs was recorded for each of the selected supermarkets and then recorded again on the following Thursday (recorded in $). It is claimed that the prices of generic eggs are different on Tuesday and Thursday respectively. The data is stored in the file grocery.txt. Assuming the prices between each supermarket location are independent, complete the exercises below. Exercise 1 It is claimed that the mean prices of generic eggs at a discount supermarket on Tuesdays and Thursdays are different. One COne What is the appropriate hypothesis test to use in this i) situation? sample Paired samplet-sample t- Z-test t-test test test Compute the absolute value of the test statistic for this ii) hypothesis test. Write you answer to at least 3 decimal places in the space provided. Select the null distribution of the test statistic. That is, the O distribution of the test statistic assuming Ho is true. t(21) t(40)t(41) t(20) N(0, 1)1(22) Compute the P-Value for this hypothesis test. Write you iv) answer to at least 3 decimal places in the space provided. Select the appropriate statistical outcome for the test v) when a = Do not reject CAccept Reject 0.05. Но Но Но Select the appropriate statistical outcome for the test Reject vi) when a = Ассept Но Do not reject Но 0.01. Но
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