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
A projectile is fired with an initial speed of 500 m / sec at an angle of elevation of 45. a. When and how far away will the projectile strike? b. How high overhead will the projectile be when it is...
Side effects Refer to Exercise 40. (a) Describe a Type I error and a Type II error in this setting, and explain the consequences of each. (b) The test has a power of 0.54 to detect that p = 0.07....
Cane Company manufactures two products called Alpha and Beta that sell for $120 and $80, respectively. Each product uses only one type of raw material that costs $6 per pound. The company has the...
Treasury shares For numerous reasons, a corporation may reacquire (buy back) shares of its own shares. When a company purchases treasury shares, usually accounts for the shares using the cost method...
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.
Dan Shoe, the manager of STRIDES Inc., prepared the company's balance sheet while the accountant was ill. The balance sheet contains numerous errors. In particular, Shoe knew that the balance sheet...
Critically review and update the leadership development plan. The question is about to review the leadership development plan and then update the same to achieve the set objectives. Also explain the...
A list of three milestones of language development and a rational of how these milestones can be met while children use the concept book.
How a Company's Internal Environment Affects the Development of the Corporate Strategy Consider a company. Discuss what might be in the organization's external, general, or industry environment that...
Subject is Professional Management and Leadership Development What is the importance of ethical and value-based relationship? HOW HAS THE COVID-19 PANDEMIC CHANGED THE ROLE OF THE LEADERSHIP?...
- What are the Change/effect of organization development - What are the strategy and structure of organization development - What are the concern of organization development practitioners - Explain...
Identify and discuss some of the issues that are common to the planning, building, and operation of an ERP, CRM, or PLM enterprise system whether for an SME or a large multinational organization.
In each of the following independent cases, document the system using whatever technique(s) your instructor specifies. a. Dreambox Creations (www.dreamboxcreations.com/) in Diamond Bar, California,...
Are the following required to file a Federal return? Answer ( YES or NO ) HOH, age 29, gross income $18,850. Choose one answer. a. Yes b. No
QUESTION 1 The primary objective of the statement of cash flows is to show cash flows and what type of cash flow it is. True False QUESTION 2 Major financing and investing activities sometimes do not...
On December 31, 2019, the inventory of Wildhorse Company amounts to $944,000. During 2020, the company decides to use the dollar-value LIFO method of costing inventories. On December 31, 2020, 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