Question
The following 5 questions are based on this information. A research analyst believes that average back-to-school spending is more than a trade group's prediction of
The following 5 questions are based on this information.
A research analyst believes that average back-to-school spending is more than a trade group's prediction of $606.
She decides to conduct a test based on a random sample of 20 households from which she calculates the sample mean as $622. She also believes that the random variable, back-to-school spending (denoted byX), is normally distributed with a population standard deviation (
) of $65.
Specify the null and alternative hypotheses.
Select one:
a.H(0): 606 Versus H(a): >606
b.H(0): 606 Versus H(a): <606
The standard error (SE) ofX
Xis
Select one:
a.139.08
b.14.53
c.31.1
d.3.25
The test statistics value is
Select one:
a.0.12
b.4.92
c.0.51
d.1.10
The p-value is given by
Select one:
a.0.08
b.0.31
c.0.14
d.0
At =0.1 and using the p-value
Select one:
a.We reject H(0) in favor of H(a)
b.We do not reject H(0)
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