Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 11: Q. 48 (page 657)

Do private practice doctors and hospital doctors have the same distribution of working hours? Suppose that a sample of 100private practice doctors and 150hospital doctors are selected at random and asked about the number of hours a week they work. The results are shown in Table

Short Answer

Expert verified

H0:The private doctor and the hospital doctor work the same number of hours.

Ha:The working hours of private doctors and hospital doctors are not evenly distributed.

Step by step solution

01

Given information

The given data is

02

Explanation

H0:The null hypothesis is as follows: It's a declaration that there's no difference between mean differences or percentage, or between a sample mean or proportion and the community mean or proportion. To put it another way, the discrepancy is zero.

Ha:The other alternative is: It's a demographic claim that goes against the assumptions and what we conclude when we reject H0.

We conclude that the private doctor and the hospital doctor have the same working hour distributed based on the concept of null hypothesis.

We infer that private doctors and hospital doctors do not share the same working hour allocation, based on the concept of alternate hypothesis.

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.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

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

Isabella, an accomplished Bay to Breakers runner, claims that the standard deviation for her time to run the 7.5mile race is at most three minutes. To test her claim, Rupinder looks up five of her race times. They are 55minutes, 61minutes, 58minutes, 63 minutes, and 57 minutes.

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

In a test of independence, the expected number is equal to the row total multiplied by the column total divided by the total surveyed.

Table 11.42contains information from a survey among 499participants classified according to their age groups. The second column shows the percentage of obese people per age class among the study participants. The last column comes from a different study at the national level that shows the corresponding percentages of obese people in the same age classes in the USA. Perform a hypothesis test at the 5% significance level to determine whether the survey participants are a representative sample of the USA obese population.

Age Class (Years) Obese Expected (percentage) Obese Observed (Frequencies)
20-30
22.4
122
31-40
18.6
104
41-50
12.8
78
51-60
10.4
64
61-70
35.8
168

Table11.42

The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken to calculate the number of U.S. citizens working in one of several industry sectors over time. Table 11.17 shows the results:

Industry Sector200020102020TotalNonagriculture wage and salary13,24313,04415,01841,305Goods-producing, excluding agriculture2,4571,7711,9506,178Services-providing10,78611,27313,06835,127Agriculture, forestry, fishing, and hunting240214201655Nonagriculture self-employed and unpaid family worker9318949722,797Secondary wage and salary jobs in agriculture and private householdindustries14111136Secondary jobs as a self-employed or unpaid family worker196144152492Total27,86727,35131,37286,590

We want to know if the change in the number of jobs is independent of the change in years. State the null and alternative hypotheses and the degrees of freedom .

The Insurance Institute for Highway Safety collects safety information about all types of cars every year, and publishes a report of Top Safety Picks among all cars, makes, and models. Table 11.58 presents the number of Top Safety Picks in six-car categories for the two years 2009 and 2013. Analyze the table data to conclude whether the distribution of cars that earned the Top Safety Picks safety award has remained the same between 2009 and 2013. Derive your results at the 5%

significance level.
See all solutions

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Read Explanation

Calculus

Read Explanation

Decision Maths

Read Explanation

Statistics

Read Explanation

Probability and Statistics

Read Explanation

Discrete Mathematics

Read Explanation
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.

Sign-up for free