The output voltage of a power supply is assumed to be normally distributed. Sixteen observations taken at

Question:

The output voltage of a power supply is assumed to be normally distributed. Sixteen observations taken at random on voltage are as follows: 10.35, 9.30, 10.00, 9.96, 11.65, 12.00, 11.25, 9.58, 11.54, 9.95, 10.28, 8.37, 10.44, 9.25, 9.38, and 10.85.

a. Test the hypothesis that the mean voltage equals 12 V using a 95% two-sided confidence interval.

b. Test the hypothesis that the variance equals 1 V using a 95% two-sided confidence interval.

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

Step by Step Answer:

Related Book For book-img-for-question

Managing Controlling and Improving Quality

ISBN: 978-0471697916

1st edition

Authors: Douglas C. Montgomery, Cheryl L. Jennings, Michele E. Pfund

See More Books

Question Posted: Sep 19, 2015 04:38 AM

See More Questions

A manufacturer is interested in the output voltage of a power supply used in a PC. Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts, and the manufacturer...
The output voltage of a power supply is normally distributed with mean 5 V and standard deviation 0.02 V. If the lower and upper specifications for voltage are 4.95 V and 5.05 V, respectively, what...
Continuation of Exercise 4.20. Reconsider the power supply manufacturing process in Exercise 4.20. Suppose we wanted to improve the process. Can shifting the mean reduce the number of nonconforming...
0 3 S 25 cos(x) sin (x) dx -T3
Briefly explain what happens during the second stage of the two-factor ANOVA.
Identify which investment manager is most suitable for Patnode. Justify your response based solely on each managers investment philosophy and approach Susan Patnode, age 66, was recently widowed and...
Show that $\left(\frac{1}{2}, \frac{1}{2} ight)$ is the optimal policy for Example 18.2 . Example 18.2 (Volatility pumping) Suppose there are two assets available for investment. One is a stock...
The following table shows the annual returns (in percent) and summary measures for the Vanguard Energy Fund and the Vanguard Health Care Fund from 2005 through 2009. a. Which fund had the higher...
x Bond Issue B (A) Cash Interest Paid $600,000.0 (B) Period Interest Expense Period 12.0% x (E) x 12.5% Ending 3/12 x 3/12 (C) Amort. (A) - (B) (D) (E) Carrying Value Unamortized $600,000 Balance (D)...
Sgt. Barnes is a veteran police officer filing as Head of Household. Currently, her taxable income is $50,000, but has been asked to sit for the Leutenant's exam. She is excited about the opportunity...
A company is evaluating the quality of aluminum rods received in a recent shipment. Diameters of aluminum alloy rods produced on an extrusion machine are known to have a standard deviation of 0.0001...
Last month, a large national banks average payment time was 33 days with a standard deviation of 4 days. This month, the average payment time was 33.5 days with a standard deviation of 4 days. They...
How do entrepreneurs add value to the economy?
Is General Motors considered a flat organization? What structure does the GM organization have?
What would be the target market be for caps for winter and summer?
Fund balance, both nonspendable and unassigned, can be computed from a limited amount of information. The schedule that follows reports the beginning balances and activity during the year in a town's...
Correct Inc. is a publicly traded firm with 100 million diluted shares outstanding trading at $37.50 per share. The company has $1 billion of debt outstanding with a cost of debt at 6.5% at a...
Canvas Company manufactures one type of camping tent tarp. Canvas Co. has two divisions: Stitching and Finishing. The Stitching Division manufactures tarps for the Finishing Division, which completes...
The Cellphonedata.xlsx file contains the population and number of cell phones for the 20 countries/regions having the most cell phones. Create a filled map that summarizes cell phones by...
(a) As Section 17.3 discusses, high-frequency sound waves exhibit less diffraction than low-frequency sound waves do. However, even high-frequency sound waves exhibit much more diffraction under...
No matter how closely the production process is monitored, some chips will work faster than others and be worth more in the marketplace. The goal is to make this number as high as possible, and...
Consider the data set shown in Table 18.5.7, indicating hourly summaries of the temperature for a baking oven measured four times per hour. a. Draw an and an R chart for each day. b. For each day,...
Find the probability that a particular set of eight consecutive points will fall on one side of the center line for a process that is in control. these are independent. You may therefore compute the...
O O A Dundas Company's inventory records for its retail division show the following at May 31: (Click the icon to view the accounting records.) At May 31, 10 of these units are on hand. Dundas...
4. R got 35% hike in his salary and 20% incentive on sales. If R sold goods worth Rs. 850 last year and the salary was Rs 70, then how much more does he earn this year with sales of Rs.900?
Teachers salaries have not been increasing as fast as the pay in many other types of work. Explain why you think this might be true. use graph of the supply and demand for teacher's labor to help...

The output voltage of a power supply is assumed to be normally distributed. Sixteen observations taken at

Question:

城::1G

Step by Step Answer:

a Since 12 is not in the 95 CI we conclude that the mean vo...View the full answer

Managing Controlling and Improving Quality

Students also viewed these Statistics questions