Question: The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is

The quality-control manager at a compact fluorescent light bulb (CFL) factory

The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7540 hours. The population standard deviation is 910 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,319 hours. a. At the 0.05 level of significance, is there evidence that the mean life is different from 7540 hours? b. Compute the p-value and interpret its meaning. c. Construct a 95% confidence interval estimate of the population mean life of the light bulbs. d. Compare the results of (a) and (c). What conclusions do you reach? e. Compare the results of parts (a) through (d) to those when the standard deviation is 700 hours. a. Let u be the population mean. Determine the null hypothesis, Ho, and the alternative hypothesis, H,- Ho: H Hy : H

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Economics Questions!

The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,473 hours. The population standard...

9.1.14-T The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the random sample of 81 light bulbs indicates a sample mean life of 7,220 hours a. At...

Thequality-control manager at a compact fluorescent light bulb(CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,501 hours. The population standard...

If, in a (two-tail) hypothesis test, the p-value is 0.1116, what is your statistical decision if you test the null hypothesis at the 0.06 level of signicance? E> Choose the correct answer below? 0 A....

1.If, in a (twotail) hypothesis test, the pvalue is 0.0081, what is your statistical decision if you test the null hypothesis at the 0.01 level of significance? Choose the correct answer below?...

If, in a (two-tail) hypothesis test, the p-value is 0.1116, what is your statistical decision if you test the null hypothesis at the 0.06 level of significance? . . . Choose the correct answer below?...

The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,540 hours. The population standard...

Instructions for Students: Answer ONLY part a in Question 4. Questions carry equal marks. You have to show the work to earn marks. Answers must be uploaded on Moodle under Assignment II. Unless...

1.If, in a (twotail) hypothesis test, the pvalue is 0.0081, what is your statistical decision if you test the null hypothesis at the 0.01 level of significance? Choose the correct answer below?...

Solve the linear programming problem using the simplex method. Maximize P= 2x, + 3x2 - 2x, + X2 s 16 -X, + X2 540 X2 5 48, x1, X2 20 subject to with Use the simplex method to solve the problem....

Dai's Diner is losing money and about to go out of business. Dai and Steve own the building where the diner is located. One evening Dai sets the building o fire in order to collect the insurance on...

Simplify 3 X plus 2 Y minus X minus 3 Y

Figure 3-B illustrates a mass m1 driven by a sinusoidal force whose frequency is w. The mass m1 is attached to a rigid support by a spring of force constant k and slides on a second mass m2. The...

(Qualitative Characteristics) SFAC No. 2 identifies the qualitative characteristics that make accounting information useful. Presented below are a number of questions related to these qualitative...

Paul Corporation is authorized to issue both preferred and common stock. The par value of the preferred is $50. During the first year of operations, the company had the following events and...

(Adjusting Entries) Karen Weller, D.D.S., opened a dental practice on January 1, 2005. During the first month of operations the following transactions occurred. 1. Performed services for patients who...

Link 2, shown in the figure, is 1 in wide, has 1 2 -in-diameter bearings at the ends, and is cut from low-carbon steel bar stock having a minimum yield strength of 24 kpsi. The end-condition...

Identifying How Machine Learning Can Solve Problems What problem would you like your machine learning model to solve? What output would you like your machine learning model to produce? How will you...

Do not take criticism personally, even if it is meant to be personal.

2. To understand that as a general rule it takes about 3 minutes before the other part(s) have made up a 90% impression of you.

3. To understand that the first impression means a lot, and it takes a lot of energy to change this first impression.