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Determine if there is evidence of a difference in the mean

The following table contains the purchase price for 10 common drugs from three different internet sites.

Drug Site#1 Site#2 Site#3

A 235.54 269.99 121.02

B 157.99 190.99 55.30

C 166.00 190.99 93.45

D 174.99 200.99 137.70

E 108.60 129.99 22.48

F 186.66 203.99 161.93

G 107.99 106.99 64.53

H 117.39 134.99 59.83

I 115.99 126.99 57.75

J 181.10 200.99 58.79

(a) At 0.05 level of significance, determine if there is evidence of a difference in the mean prices of drugs at the three online sites?

(b) Use the Tukey procedure to determine which site prices differ? Use a 0.05 level of significance.

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Determine if there is evidence of a difference in the mean

Reference No:- TGS0584365

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Prepared by a verified Expert

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Reference No:- TGS0584365

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