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Introductory Statistics

Barbara Illowsky, Susan Dean

$Math Studyset Vaia Explanations$ Math

OER 2018 Edition · 902 pages

ISBN: 9781938168208

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

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The graph:

Step by step solution

Given Information

Given data:

Explanation

$α = 0.05$ So take a decision "reject the null hypothesis $H_{0}$ "because p-value $< α$ 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 teacher predict that the distribution of grades on the final exam will be and they are recorded in table 11.27

The actual distribution for a class of 20 is in table 11.28

State the null and alternative hypothesis

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

The test to use to determine if a six-sided die is fair is a goodness-of-fit test.

Use a solution sheet to solve the hypothesis test problem. Go to Appendix E for the chi-square solution sheet. Round expected frequency to two decimal places College students may be interested in whether or not their majors have any effect on starting-salaries after graduation. Suppose that $300$ recent graduates were surveyed as to their majors in college and their starting salaries after graduation. Table $11.45$ shows the data. Conduct a test of independence.

Major	$< \(50, 000$	$\) 50, 000 - \(68, 999$	$\) 69, 000 +$
English	$5$	$20$	$5$
Engineering	$10$	$30$	$60$
Nursing	$10$	$15$	$15$
Business	$10$	$20$	$30$
Psychology	$20$	$30$	$20$

Table $11.45$

Determine the appropriate test to be used in the next three exercises.

A personal trainer is putting together a weight-lifting program for her clients. For a $90$ -day program, she expects each client to lift a specific maximum weight each week. As she goes along, she records the actual maximum weights her clients lifted. She wants to know how well her expectations met with what was observed.

The manager of "Frenchies" is concerned that patrons are not consistently receiving the same amount of French fries with each order. The chef claims that the standard deviation for a ten-ounce order of fries is at most $1.5$ oz., but the manager thinks that it may be higher. He randomly weighs $49$ orders of fries, which yields a mean of $11$ oz. and a standard deviation of two oz.

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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

Step by step solution

Given Information

Explanation

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Most popular questions from this chapter

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