A national organization has been working with utilities throughout the nation to find sites for large wind machines that generate electricity. Wind speeds must average more than 19 miles per hour

( \mathrm { mph } )

for a site to be acceptable. Recently, the organization conducted wind speed tests at a particular site. Based on a sample of

n = 45

wind speed recordings (taken at random intervals), the wind speed at the site averaged

\bar { x } = 19.9 \mathrm { mph }

, with a standard deviation of

s = 4.5 \mathrm { mph }

. To determine whether the site meets the organization's requirements, consider the test,

H _ { 0 } : \mu = 19

vs.

H _ { \mathrm { a } } : \mu > 19

, where

\mu

is the true mean wind speed at the site and

\alpha = .01

. Suppose the value of the test statistic were computed to be

1.34

. State the conclusion.
A) At

\alpha = .01

, there is insufficient evidence to conclude the true mean wind speed at the site exceeds

19 \mathrm { mph }

.
B) At

\alpha = .01

, there is sufficient evidence to conclude the true mean wind speed at the site exceeds

19 \mathrm { mph }

.
C) We are

99 \%

confident that the site does not meet the organization's requirements.
D) We are

99 \%

confident that the site meets the organization's requirements.

A Random Sample of 100 Observations Is Selected from a Binomial

Essay

Correct Answer:VerifiedThe p-value is .115.; The prob...View AnswerUnlock this answer nowGet Access to more Verified Answers free of chargeView Full Answer For Free

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The p-value is .115.; The prob...
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