a) How many degrees of freedom does the t-statistic have? 2? 20.2920.29 60.8960.
ID: 3228304 • Letter: A
Question
a) How many degrees of freedom does the t-statistic have?
2?
20.2920.29
60.8960.89
80.6580.65
5.395.39
24.2824.28
65.1065.10
26.6026.60
27.5227.52
47.5347.53
71.0871.08
71.2571.25
52.0052.00
52.5952.59
86.6386.63
14.6114.61
34.3334.33
55.9255.92
88.0888.08
a) The t-statistic has
degrees of freedom.
(Simplify your answer.)
b) If the sample size had been
2, the t-statistic would have
degrees of freedom.
(Simplify your answer.)
A random sample of 18 purchases showed the amounts in the table (in $). The mean is $49.1549.15 and the standard deviation is $25.5525.55.a) How many degrees of freedom does the t-statistic have?
b) How many degrees of freedom would the t-statistic have if the sample size had been2?
20.2920.29
60.8960.89
80.6580.65
5.395.39
24.2824.28
65.1065.10
26.6026.60
27.5227.52
47.5347.53
71.0871.08
71.2571.25
52.0052.00
52.5952.59
86.6386.63
14.6114.61
34.3334.33
55.9255.92
88.0888.08
Explanation / Answer
Fromula: Degrees of freedom = n - 1
a) In this case,
n = 18
So,
Degrees of freedom = 18 - 1 = 17
b) For n = 2,
Degrees of freedom = 2 - 1 = 1
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