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An analyst wants to compare the 5G service provided by Zain and STC. A sample of five customers using both Zain and STC were asked

An analyst wants to compare the 5G service provided by Zain and STC. A sample of five customers using both Zain and STC were asked how much score (out of 100) they give to 5G service of both telecom services. The response is given in the following table:

Customer #

1

2

3

4

5

Zain

83

74

73

75

83

STC

63

61

68

60

67


For testing the hypothesis that the average customer satisfaction of Zain users is higher as compared to STC by at least 15 point, what is the value of T-test statistic?

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