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Chapter 11: 40 (page 657)

Graph the situation. Label and scale the horizontal axis. Mark the mean and test statistic. Shade in the region corresponding to the p-value.

Short Answer

Expert verified

The graph:

Step by step solution

01

Given Information

Given data:

02

Explanation

伪=0.05So take a decision "reject the null hypothesis H0"because p-value<伪so p--value is 0.

As a result of "rejecting the null hypothesis," the alternative hypothesis was accepted, and there is sufficient data to suggest that self-reported ethnicity is influenced by daily smoking levels.

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Most popular questions from this chapter

A six-sided die is rolled 120times. Fill in the expected frequency column. Then, conduct a hypothesis test to determine if the die is fair. The data in Table 11.34are the result of the 120rolls.

Face Value FrequencyExpected Frequency
115
229
316
415
530
615

Suppose an airline claims that its flights are consistently on time with an average delay of at most 15minutes. It claims that the average delay is so consistent that the variance is no more than 150minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25flights. The average delay for those 25flights is 22minutes with a standard deviation of 15minutes.

If an additional test were done on the claim of the average delay, which distribution would you use?

Conduct a goodness-of-fit test to determine if the actual college majors of graduating females fit the distribution of their expected majors.

Major Women -Expected MajorWome -Actual Major
Arts & Humaities 14.0% 670
Biological Sciences
 8.4% 410
Business
 13.1% 685
Education 13.0% 650
Engineering
 2.6% 145
Physical Sciences
 2.6% 125
Professional
 18.9% 975
Social Sciences
 13.0% 605
Technical
 0.4% 15
Other
 5.8% 300
Undecided 8.0% 420

Read the statement and decide whether it is true or false.

The number of degrees of freedom for a test of independence is equal to the sample size minus one.

Let伪=0.05

Decision: ________

Conclusion (write out in a complete sentence.): ________
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