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Chapter 11: Q.115 (page 668)

p-value = ________

Short Answer

Expert verified

p-value=0.055

Step by step solution

01

Given information

Given in the question that, Suppose an airline claims that its flights are consistently on time with an average delay of at most 15 minutes. It claims that the average delay is so consistent that the variance is no more than150 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is 22 minutes with a standard deviation of 15 minutes.

02

Explanation

The p-value can be calculated in excel by using CHIDIST ( ) formula as shown below:

Hence, the p-value is .0.055

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Most popular questions from this chapter

Suppose that 600thirty-year-olds were surveyed to determine whether or not there is a relationship between the level of education an individual has and salary. Conduct a test of independence

AnnualSalaryNot a high schoolgraduateHigh schoolgraduateCollegegraduateMasters ordoctorate<\(30,0001525105\)30,000-\(40,00020407030\)40,000-\(50,00010204055\)50,000-\(60,0005102060\)60,000+0510150

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

MajorMen - Expected MajorMen - Actual MajorArts & Humanities11.0%600Biological Sciences6.7%330Business22.7%1130Education5.8%305Engineering15.6%800Physical Sciences3.6%175Professional9.3%460Social Sciences7.6%370Technical1.8%90Other8.2%400Undecided6.6%340

chi-square test statistic = ________

The marital status distribution of the U.S. male population, ages 15and older, is as shown in Table 11.35.

Martial Status Percent Frequency
never married 31.3
married 56.1
widowed 2.5
divorced /separated 10.1

How many passengers are expected to travel between 201 and 300 miles and purchase second-class tickets?
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