H0: Null Hypothesis: =80
HA: Alternative Hypothesis: 80
From the given data,the following statistics are calculated:
n = 15
= 1350/15 =90
s = 49.3530
SE = s/
= 49.3530/ = 12.7429
Test statistic is:
t = (90 - 80)/12.7429= 0.7848
Take = 0.05
ndf = 15 - 1 = 14
From Table, critical values of t = 2.1448
Since calculated value of t = 0.7848 is less than thecritical value of t = 2.1448, the difference is not significant. Fail to reject null hypothesis.
Conclusion:
The data support the claim that the mean cost of jeans for
Community College students is $80.
Perform the 4 step process of Hypothesis Test!! Is the mean cost of jeans for Community...
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