# 1. A fitness center is interested in finding a 98%

1.

A fitness center is interested in finding a 98% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 215 members were looked at and their mean number of visits per week was 2.5 and the standard deviation was 1.9. Round answers to 3 decimal places where possible.

a. To compute the confidence interval use a ? t z  distribution.

b. With 98% confidence the population mean number of visits per week is between  and   visits.

c. If many groups of 215 randomly selected members are studied, then a different confidence interval would be produced from each group. About  percent of these confidence intervals will contain the true population mean number of visits per week and about  percent will not contain the true population mean number of visits per week.

2.

You are interested in finding a 98% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 13 randomly selected non-residential college students. Round answers to 3 decimal places where possible.

1524272411132713202324623

a. To compute the confidence interval use a ? t z  distribution.

b. With 98% confidence the population mean commute for non-residential college students is between  and   miles.

c. If many groups of 13 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About  percent of these confidence intervals will contain the true population mean number of commute miles and about  percent will not contain the true population mean number of  commute miles.

3.  Isabella wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 42 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 11.6 and a standard deviation of 1.4. What is the 95% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Assume the data is from a normally distributed population. Round answers to 3 decimal places where possible.

< μμ <

4.

You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures:

38.324.320.745.416.926.627.727.331.319.429.3
Find the 80% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. Assume the data is from a normally distributed population.

80% C.I. =

Pages (275 words)
Standard price: \$0.00

### Latest Reviews

Impressed with the sample above? Wait there is more

Related Questions

### Database Schema and Data

Description This paper explores topics in database design. Write about each topic and provide an example of how it can be used in a real

### Please read the article and answer the questions. A minimum

Please read the article and answer the questions. A minimum of 350 words.   Additionally, read the US Department of Justice and US Department of

### The CEO has asked you to prepare an executive summary

The CEO has asked you to prepare an executive summary to present to the Board of Trustees, discussing the following information: Identify the different types of

### AC and DC Generators Topic #3 Research and discuss DC

AC and DC Generators Topic #3 Research and discuss DC Generator voltage, current, and power expectations.      direct-current (DC) generator is a rotating machine

### Goals & Objectives

The purpose of this homework is to prepare you for an in-class discussion with your team about possible event goals and objectives. Read the unit

### Assignment 1 Article review requirements: Topic: Domestic Abuse in Marriages

Assignment 1 Article review requirements: Topic: Domestic Abuse in Marriages  2010-2021 1.  Begin the article review with APA-style citation of the article you are reviewing

### User experience is central to interaction design. Find and examine

User experience is central to interaction design. Find and  examine a handheld device, such as a smartphone, tablet, remote control,  gaming console, smartwatch, etc.

### Discussion – Week 9 Top of Form Discussion: Spiritual Development

Discussion – Week 9 Top of Form Discussion: Spiritual Development Do you identify as a spiritual or religious person? How might your spiritual identity

### free Web-Based EHR Experience Discuss your experience and what features

free Web-Based EHR Experience Discuss your experience and what features you found most helpful in the free Web-based EHR website to facilities and physicians.

### ENTIRE COURSE (5 Weeks- 5 Assignments-10 Discussions) This course emphasizes

ENTIRE COURSE (5 Weeks- 5 Assignments-10 Discussions) This course emphasizes fundamental Web development skills. It provides a comprehensive overview of the processes to develop a

### Research project manager's positions and please post the following. Please

Research project manager’s positions and please post the following. Please do not copy and paste from web sites. Find three different job postings in the

### Discussion 2: Culture Change

Culture change is an often overlooked aspect in discussions of culture. What does the case of Kiowa Christianity (described in the reading) reveal about human

New questions