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Refwr to the accompanying data display that results from a sample of aurport data spoeds in...

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Basic Math

Refwr to the accompanying data display that results from a sampleof aurport data spoeds in Mbps.
TInterval
(13.046,22.15)
x(bar)=17.598
Sx=16.01712719
n=50

A) What is the number of degrees of freedom that should beused for finding the critical value t (sub alpha/2)?
df=

B) Find the critical value t (sub alpha/2) corresponding to a95% confidence level?
t(sub alpha/2)=

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