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Chapter 9: Q.50 (page 539)

Assume H0:μ≤6 and Ha:μ>6.Is this a left-tailed, right-tailed, or two-tailed test?

Short Answer

Expert verified

It is right-tailed test.

Step by step solution

01

Given information 

Assumption:

H0:μ≤6Ha:μ>6

02

Explanation

The null hypothesis is assumed to be

H0:μ≤6

The alternative hypothesis is Ha:μ>6.

From the assumption, we can say that it is a right-tailed test.

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Most popular questions from this chapter

We want to test if it takes fewer than 45minutes to teach a lesson plan. State the null and alternative hypotheses. Fill in the correct symbol (=,≠,≥,≤,≤,>)for the null and alternative hypotheses.

a.H0:μ-45

b.Ha:μ-45

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A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening night midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 of them attended the midnight showing. At a 1% level of significance, an appropriate conclusion is:

a. There is insufficient evidence to conclude that the percent of EVC students who attended the midnight showing of Harry Potter is less than 20%.

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d. There is insufficient evidence to conclude that the percent of EVC students who attended the midnight showing of Harry Potter is at least 20%.

A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 of them attended the midnight showing. The Type I error is to conclude that the percent of EVC students who attended is ________.

a. at least 20%, when in fact, it is less than 20%.

b. 20%, when in fact, it is 20%.

c. less than20%, when in fact, it is at least 20%.

d. less than 20%, when in fact, it is less than 20%.
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