/*! 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. 55 The National Longitudinal Study ... [FREE SOLUTION] | 91影视

91影视

The National Longitudinal Study of Adolescent Health interviewed a random sample of 4877teens (grades 7to 12). One question asked, 鈥淲hat do you think are the chances you will be married in the next 10years?鈥 Here is a two-way table of the responses by gender:

Which of the following is the appropriate null hypothesis for performing a chi-square test?

a. Equal proportions of female and male teenagers are almost certain they will be married in 10years.

b. There is no difference between the distributions of female and male teenagers鈥 opinions about marriage in this sample.

c. There is no difference between the distributions of female and male teenagers鈥 opinions about marriage in the population.

d. There is no association between gender and opinion about marriage in the sample.

e. There is no association between gender and opinion about marriage in the population.

Short Answer

Expert verified
Option (e)Ho: There is no correlation between gender and population opinion on marriage.
Ha: In the population, there is a link between gender and attitudes toward marriage.

Step by step solution

01

Given information

We have to determine the state the null and alternative hypotheses.

02

Simplification

The null and alternative hypotheses:

鈥冣赌H0: There is no correlation between gender and population opinion on marriage.

鈥冣赌Ha: In the population, there is a link between gender and attitudes toward marriage.

Hence, option e is correct.

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

Munching Froot Loops Kellogg鈥檚 Froot Loops cereal comes in six colors:

orange, yellow, purple, red, blue, and green. Charise randomly selected 120 loops and noted the color of each. Here are her data:

Do these data provide convincing evidence at the 5% significance level that Kellogg鈥檚 Froot Loops do not contain an equal proportion of each color?

The manager of a high school cafeteria is planning to offer several new types of food for student lunches in the new school year. She wants to know if each type of food will be equally popular so she can start ordering supplies and making other plans. To find out, she selects a random sample of 100 students

and asks them, 鈥淲hich type of food do you prefer: Ramen, tacos, pizza, or hamburgers?鈥 Here are her data:

An appropriate null hypothesis to test whether the food choices are equally popular is

a. H0:=25where =the mean number of students that prefer each type of food.

b. H0:p=0.25where p = the proportion of all students who prefer ramen.

c. H0:nR=nT=nP=nH=25where nRis the number of students in the school who would choose ramen, and so on.

d.H0:pR=pT=pP=pH=0.25where pRis the proportion of students in the school who would choose ramen, and so on.

e. H0:pR=pT=pP=pH=0.25, where pRis the proportion of students in the sample who chose ramen, and so on.

Testing a genetic model Biologists wish to cross pairs of tobacco plants having genetic makeup Gg, indicating that each plant has one dominant gene (G) and one recessive gene (g) for color. Each offspring plant will receive one gene for color from each parent. The Punnett square shows the possible combinations of genes received by the offspring.

The Punnett square suggests that the expected ratio of green (GG) to yellow-green (Gg) to albino (gg) tobacco plants should be 1:2:1. In other words, the biologists predict that 25%of the offspring will be green, 50%will be yellow-green, and 25%will be albino. To test their hypothesis about the distribution of offspring, the biologists mate 84randomly selected pairs of yellow-green parent plants. Of 84offspring, 23plants were green, 50were yellow-green, and 11 were albino. Do the data provide convincing evidence at the =0.01 level that the true distribution of offspring is different from what the biologists predict?

All current-carrying wires produce electromagnetic (EM) radiation, including the electrical wiring running into, through, and out of our homes. High-frequency EM radiation is thought to be a cause of cancer. The lower frequencies associated with household current are generally assumed to be harmless. To investigate the relationship between current configuration and type of cancer, researchers visited the addresses of a random sample of children who had died of some form of cancer (leukemia, lymphoma, or some other type) and classified the wiring configuration outside the dwelling as either a high-current configuration (HCC) or a low-current configuration (LCC). Here are the data:

Computer software was used to analyze the data. The output included the value X2=0.435

Which of the following is the appropriate degrees of freedom for the X2test?

a. 1

b. 2

c. 3

d. 4

e. 5

Roulette Casinos are required to verify that their games operate as advertised. American roulette wheels have 38 蝉濒辞迟蝉鈥18 red, 18 black, and 2 green. In one casino, managers record data from a random sample of 200 spins of one of their American roulette wheels. The table displays the results.

a. State appropriate hypotheses for testing whether these data give convincing evidence that the distribution of outcomes on this wheel is not what it should be.

b. Calculate the expected count for each color.

c. Calculate the value of the chi-square test statistic.

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.