In one? year, an online travel agency reported that summer travelers booked thei
ID: 3375357 • Letter: I
Question
In one? year, an online travel agency reported that summer travelers booked their airline reservations an average of
70.470.4
days in advance. A random sample of 40 summer travelers in a later year was? selected, and the number of days travelers booked their airline reservations in advance was recorded. The data are shown in the accompanying table. Complete parts a and b below.
65
83
87
77
69
74
70
68
82
71
89
62
69
73
87
68
80
73
92
74
92
60
68
57
66
95
56
85
80
62
88
71
59
65
81
82
77
56
73
73
Determine the test? statistic,
t Subscript x overbartx.
65
83
87
77
69
74
70
68
82
71
89
62
69
73
87
68
80
73
92
74
92
60
68
57
66
95
56
85
80
62
88
71
59
65
81
82
77
56
73
73
Explanation / Answer
The statistical software output for this problem is:
One sample T hypothesis test:
? : Mean of variable
H0 : ? = 70.4
HA : ? ? 70.4
Hypothesis test results:
Hence,
Test statistic = 2.13
Variable Sample Mean Std. Err. DF T-Stat P-value Data 73.975 1.6765683 39 2.1323318 0.0393Related Questions
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