/*! 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.2 聽The weights (in pounds) of thr... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 8: Q.2 (page 524)

The weights (in pounds) of three adult males are 160,215and195. The standard error of the mean of these three weights is

(a) 190

(b) 27.84

(c) 22.73

(d) 16.07

(e)13.13

Short Answer

Expert verified

(e) The standard error of mean is13.13

Step by step solution

01

Step-1 Given Information

Given In the question that , The weights of three adult males are 160,215,and195we have to find the correct option.

02

Step-2 Explanation

The formula to compute the standard error of mean is:

StandarderrorMean=蟽n

The values of mean and standard deviation using Ti-83 calculator could be calculated as:

From the above output, the standard deviation =22.73and sample size =3

The standard error of the mean is calculated as follows:

StandarderrorMean=蟽n

localid="1649222387632" =22.733

=13.13

Hence, the correct option is (e)

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

Conditions Martin says that the relative importance of the three conditions for performing inference is, in order from most to least important, Independent, Normal, and Random. Write a brief note to Martin explaining why he is incorrect.

98% Confidence find z*for a98%confidence interval using table A or tour calculator. show your method.

A quality control inspector will measure the salt content (in milligrams) in a random sample of bags of potato chips from an hour of production. which of the following would result in the smallest margin of error in estimating the mean salt content M?

(a) 90% confidence; n=25.

(b) 90% confidence; n=50.

(c) 95% confidence; n=25.

(d) 95%confidence; n=50.

(e) n=100 at any confidence level.

6. Auto emissions Oxides of nitrogen (called NOXfor short) emitted by cars and trucks are important contributors to air pollution. The amount of NOX
emitted by a particular model varies from vehicle to vehicle. For one light-truck model, NOXemissions vary with mean 渭that is unknown and standard deviation 蟽=0.4gram per mile. You test an SRSof 50of these trucks. The sample mean NOXlevel xestimates the unknown 渭. You will get different values of xif you repeat your sampling.

(a) Describe the shape, center, and spread of the sampling distribution of x.
(b) Sketch the sampling distribution of x. Mark its mean and the values one, two, and three standard deviations on either side of the mean.
(c) According to the 68鈥�95鈥�99.7rule, about 95%of all values of xlie within a distance mof the mean of the sampling distribution. What is m? Shade the region on the axis of your sketch that is within m of the mean.
(d) Whenever x炉falls in the region you shaded, the unknown population mean 渭lies in the confidence interval x卤m. For what percent of all possible samples does the interval capture 渭?

How common is SAT coaching? A random sample of students who took the SAT college entrance examination twice found that 427of the respondents had paid for coaching courses and that the remaining 2733 had not. 1+ Construct and interpret a 99% confidence interval for the proportion of coaching among students who retake the SAT. Follow the four-step process.
See all solutions

Recommended explanations on Math Textbooks

Mechanics Maths

Read Explanation

Pure Maths

Read Explanation

Logic and Functions

Read Explanation

Probability and Statistics

Read Explanation

Geometry

Read Explanation

Applied 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.