/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q.3 聽Aw, nuts! Calculate the chi-sq... [FREE SOLUTION] | 91影视

91影视

Aw, nuts! Calculate the chi-square statistic for the data in Exercise 1. Show your work.

Short Answer

Expert verified

From the given information, the test statistics are6.5988

Step by step solution

01

Given Information

It is given in the question that,

p1=52%=0.52

p2=27%=0.27

p3=13%=0.13

p4=8%=0.08

n=Samplesize=150

The one-way table below displays the sample data.

02

Step 2: Explanation

The null and alternative hypotheses are:

H0: p1=p2=p3

H: At least one of piis different.

The calculation for the test statistic is done as:

03

Explanation

The test statistics are:

2=(OE)2/E=6.5988

Therefore, the test statistics are6.5988

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Seagulls by the seashore Do seagulls show a preference for where they land? To answer this question, biologists conducted a study in an enclosed outdoor space with a piece of shore whose area was made up of 56% sand, 29% mud, and 15% rocks. The biologists chose 200seagulls at random. Each seagull was released into the outdoor space on its own and observed until it landed somewhere on the piece of shore. In all, 128seagulls landed on the sand, role="math" localid="1650465230449" 61landed in the mud, and role="math" localid="1650465221489" 11landed on the rocks. Carry out a chi-square goodness-of-铿乼 test. What do you conclude?

No chi-squareThe principal in Exercise 9also asked the random sample of students to record whether they did all of the homework that was assigned on each of the 铿乿e school days that week. Here are the data:

Explain carefully why it would not be appropriate to perform a chi-square goodness-of-铿乼 test using these data.

Yahtzee (5.3,6.3)In the game of Yahtzee, 5six-sided dice are rolled simultaneously. To get a Yahtzee, the player must get the same number on all 5dice.

(a) Luis says that the probability of getting a Yahtzee in one roll of the dice is 165. Explain why Luis is wrong.

(b) Nassir decides to keep rolling all 5 dice until he gets a Yahtzee. He is surprised when he still hasn鈥檛 gotten a Yahtzee after25rolls. Should he be? Calculate an appropriate probability to support your answer .

Researchers looked at a random sample of 1509full-page ads that show a model in magazines aimed at young men, at young women, or at young adults in general. They classified the ads as 鈥渘ot sexual鈥 or 鈥渟exual,鈥 depending on how the model was dressed (or not dressed). Here are the data:

The figure below displays Minitab output for a chi-square test using these data

a) Which type of chi-square test should be used in this case? Justify your answer.

(b) State an appropriate pair of hypotheses for the test you chose in part (a).

(c) Show how each of the numbers 60.94,424.8,and 12.835was obtained for the 鈥渘otsexy, Women鈥 cell

(d) Assuming that the conditions for performing inference are met, what conclusion would you draw? Explain

No chi-square A school鈥檚 principal wants to know if students spend about the same amount of time on homework each night of the week. She asks a random sample of 50students to keep track of their homework time for a week. The following table displays the average amount of time (in minutes) students reported per night:

Explain carefully why it would not be appropriate to perform a chi-square goodness-of-铿乼 test using these data.

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.