/*! 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. 44 A cardiologist is interested in ... [FREE SOLUTION] | 91影视

91影视

A cardiologist is interested in the mean recovery period of her patients who have had heart attacks.

Short Answer

Expert verified

a. Patients of cardiologists make up the population.

b. A sample is a group of the cardiologist's patients.

c. The measure represents the average recovery time for all of the cardiologist's patients.

d. The group of cardiologist's patients has a recovery duration of mean.

e. The variable is the, X= the mean recovery period of one patient..

f. The variable provides data in the form of X values, such as 10 days, 14 days, 20 days, and so on.

Step by step solution

01

Introduction

A cardiologist is a doctor with special training and skill in finding, treating and preventing diseases of the heart and blood vessels.

02

Explanation of a

The group will be cardiologist's cardiac patients, according to the information presented.

03

Explanation of b

Based on the information supplied, a random sample of cardiac patients will be used to analyze the data.

04

Explanation of c

The parameter of this data will be the population mean recovery period for cardiologist's heart patients, according to the facts provided.

05

Explanation of d

Based on the information supplied, the statistic for this data will be the cardiologist's sample mean recovery duration for cardiac patients.

06

Explanation of e

Based on the information supplied, the recovery duration will be a variable in this data.

07

Explanation of f

The data will be the value of the variable, such as 5 months or 10 months, based on the information supplied.

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

Nineteen immigrants to the U.S were asked how many years, to the nearest year, they have lived in the U.S. The data are as follows:

Table 1.35was produced.

a. Fix the errors in Table 1.35. Also, explain how someone might have arrived at the incorrect number(s).

b. Explain what is wrong with this statement: 鈥47percent of the people surveyed have lived in the U.S. for 5测别补谤蝉.鈥

c. Fix the statement in b to make it correct.

d. What fraction of the people surveyed have lived in the U.S. five or seven years?

e. What fraction of the people surveyed have lived in the U.S. at most 12years?

f. What fraction of the people surveyed have lived in the U.S. fewer than 12years?

g. What fraction of the people surveyed have lived in the U.S. from five to 20years, inclusive?

A 鈥渞andom survey鈥 was conducted of 3,274people of the 鈥渕icroprocessor generation鈥 (people born since 1971, the year the microprocessor was invented). It was reported that 48% of those individuals surveyed stated that if they had $2,000to spend, they would use it for computer equipment. Also, 66%of those surveyed considered themselves relatively savvy computer users.

a. Do you consider the sample size large enough for a study of this type? Why or why not?

b. Based on your 鈥済ut feeling,鈥 do you believe the percents accurately reflect the U.S. population for those individuals born since 1971? If not, do you think the percents of the population are actually higher or lower than the sample statistics? Why? Additional information: The survey, reported by Intel Corporation, was filled out by individuals who visited the Los Angeles Convention Center to see the Smithsonian Institute's road show called 鈥淎merica鈥檚 Smithsonian.鈥

c. With this additional information, do you feel that all demographic and ethnic groups were equally represented at the event? Why or why not?

d. With the additional information, comment on how accurately you think the sample statistics reflect the population parameters

Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A: 3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34

Researcher B: 3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

Suppose that the second researcher conducted his survey by choosing 40 patients he knew. What sampling method would that researcher have used? What concerns would you have about this data set, based upon the data collection method?

Discuss potential violations of the rule requiring informed consent.

a. Inmates in a correctional facility are offered good behavior credit in return for participation in a study.

b. A research study is designed to investigate a new children鈥檚 allergy medication.

c. Participants in a study are told that the new medication being tested is highly promising, but they are not told that only a small portion of participants will receive the new medication. Others will receive placebo treatments and traditional treatments.

Use the following data to answer the next five exercises: Two researchers are gathering data on hours of video games played by school-aged children and young adults. They each randomly sample different groups of 150 students from the same school. They collect the following data.

Would the sample size be large enough if the population is the students in the school?

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.