Question

Denver bölgesindeki üç süpermarket zincirinin her biri, en düşük genel fiyatlara sahip olduğunu iddia ediyor. Süpermarket...

Denver bölgesindeki üç süpermarket zincirinin her biri, en düşük genel fiyatlara sahip olduğunu iddia ediyor. Süpermarket reklamcılığı üzerine yapılan bir araştırmanın bir parçası olarak, yerel bir televizyon istasyonu rastgele olarak dokuz bakkal öğesi seçerek bir çalışma yürüttü. Daha sonra, aynı gün, dokuz eşyayı satın almak için üç mağazanın her birine bir stajyer gönderildi. Makbuzlardan aşağıdaki veriler kaydedildi. 0.050 anlamlılık düzeyinde, üç süpermarket arasındaki dokuz madde için ortalama fiyatta bir fark var mı?

madde Süper en Ralph Lowblaw en
1 $ 1.02 $ 1.32 $ 2.46
2 1.37 1.29 1.37
3 1.57 2,01 1.57
4 1.25 2.46 1.25
5 1.87 3.10 1.87
6 1,72 2.22 2.40
7 4.21 3.90 4.21
8 1.80 4.04 3.54
9 5.17 4.36 3.75

1-) Sıfır hipotezini ve alternatif hipotezi belirtin.

Tedavi için (Mağazalar): Sıfır hipotezi

a-)H0: μ1 ≠ μ2 ≠ μ3

b-)H0: μ1 = μ2 = μ3

( ) a

( ) b

2-)Alternate hypothesis

( ) H1: There is no difference in the store means.

( ) H1: There is a difference in the store means.

3-) For blocks (Items):

a. H0: μ1 = μ2 = ... μ9

b. H0: μ1 ≠ μ2 ≠ ... μ9

( ) a

( ) b

4-) Alternate hypothesis

( ) H1: There is no difference in the item means.

( ) H1: There is a difference in the item means.

5-) What is the decision rule for both? (Round your answers to 2 decimal places.)

Reject Ho if F>
For stores
For items

6-)Complete an ANOVA table. (Round your SS, MS to 3 decimal places, and F to 2 decimal places.)

Source SS df MS F
Stores
Items
Error
Total

7-)What is your decision regarding the null hypothesis? The decision for the F value (Stores) at 0.050 significance is :

( ) Do not reject H0

( ) Reject H0

8-) The decision for the F value (Items) at 0.050 significance is:

( ) Do not reject H0

( ) Reject H0

9-) Is there a difference in the item means and in the store means?

There is ___________ in the store means. There is ________ in the item means.

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