The amount of time that a certain cell phone will keep a charge is known to be normally distributed with standard deviation 16 hours A sample of 40 cell phones had a mean time of 141 hours Let represent the population mean time that a cell phone will keep a charge a What is the point estimate of b ...

The Answer is in the image, click to view ...

The amount of time that a certain cell phone will keep a charge is known to be

Question:

The amount of time that a certain cell phone will keep a charge is known to be normally distributed with standard deviation

σ = 16 hours. A sample of 40 cell phones had a mean time of 141 hours. Let μ represent the population mean time that a cell phone will keep a charge.

a. What is the point estimate of μ?

b. What is the standard error of the point estimate?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

See More Books

Question Posted: May 07, 2024 12:02 PM

See More Questions

Refer to Exercise 10. What sample size is necessary so that a 95% confidence interval will have a margin of error of 1 hour? Exercise 10 The amount of time that a certain cell phone will keep a...
Refer to Exercise 10. Suppose that a 95% confidence interval is to be constructed for the mean time. a. What is the critical value? b. What is the margin of error? c. Construct the 95% confidence...
A bearing used in an automotive application is suppose to have a nominal inside diameter of 1.5 inches. A random sample of 25 bearings is selected and the average inside diameter of these bearings is...
Please watch the video link and answer the following questions. https://youtu.be/VtvjbmoDx-I On January 22,1984, Apple produced one of the most famous Super Bowl ads of all time. Directed by Ridley...
Find the function u.(x) that minimizes the integral subject to the boundary conditions n(l) = 0, m(2) = 1. du +x*u dx dx Plu) = %3D
Develop a set of tables to implement the integrated REA diagram you developed in Problem 18.3 for Sues Gallery in a relational database. Specify a primary key for each table, and suggest at least one...
Find an article that discusses a summary judgment motion for a case in California. What was the motion about? Was it granted or denied? Were reasons given for the decision?
Outsourcing and ethics Hollenberry, Inc., is a successful mail-order catalog business with customers worldwide. The companys headquarters is in a small town some distance from any major metropolitan...
When you retire you want to have enough money in your retirement account to generate an annual income of $ 8 0 , 0 0 0 per year and you expect to live for 1 5 years after you retire. You wont be able...
In a survey of 802 U.S. adult drivers, 265 state that traffic is getting worse in their community. Construct a 99% confidence interval for the proportion of adult drivers who think that traffic is...
Find the critical values for a 98% confidence interval using the chi-square distribution with 18 degrees of freedom.
You invest $1,000 a year for ten years at 10 percent and then invest $2,000 a year for an additional ten years at 10 percent. How much will you have accumulated at the end of the 20 years?
Complete this question by entering your answers in the tabs below. Req A Req B and C Record the transactions in the accounting equation for Year 2. Record the amounts of revenue, expense, and...
According to S&P analyst Angelo Zino, Qualcomm will pay $6.00, $9.00, and $13.00 in dividends over the next three years in that order. Angelo expects dividends to grow at 3 percent perpetual rate...
Discuss the role of nature vs. nurture on child development, including the impact of genetics and environmental factors like socioeconomic status, cultural norms, etc. In what ways do you think your...
Find inverse y = - 4 / 5 x + 1 1
Use Form 8594. Read the instructions to the form to address any uncertainty. You may also read Section 1060. The purpose of this section is to prescribe an approach to allocate a lump sum purchase or...
Someone proposes that the entire refrigerator/ freezer requirements of a store be met using a large freezer that supplies sufficient cold air at -20C instead of installing separate refrigerators and...
How does Kant answer Humes bundle theory of self? Do you think he is successful?
Miller Company's contribution format income statement for the most recent month is shown below: Sales (37,000 units) Variable expenses Contribution margin Fixed expenses Net operating income...
When attending a costume party at a local bar, the accused (Kevin) groped the complainant multiple times. Despite the fact that the complainant said a clear "No" to every sexual advance Kevin made,...
You are on duty as the police officer on patrol. While driving around the city, you come upon the following situations. Review the scenarios carefully and then address the prompts following the...

The amount of time that a certain cell phone will keep a charge is known to be

Question:

Step by Step Answer:

Elementary Statistics

Students also viewed these Business questions