Mean annual percentage turnover for plants exceeds mean

Assignment Help Basic Statistics
Reference no: EM13112809

Since the emergence of Japan as an industrial superpower in the 1970s and 1980s, U.S. businesses have paid close attention to Japanese management styles and philosophies. Some of the credit for the high quality of Japanese products is attributed to the Japanese system of permanent employment for their workers. In the United States, high job turnover rates are common in many industries and are associated with high product defect rates. High turnover rates mean U.S. plants have more inexperienced workers who are unfamiliar with the company's product lines than Japan has. For example, in a study of the air conditioner industry in Japan and the United States, the difference in the average annual turnover rate of workers between U.S. plants and Japanese plants was reported as 3.1%. In a more recent study, five Japanese and five U.S. plants that manufacture air conditioners were randomly sampled; their turnover rates are shown below.
U.S. Plants Japanese Plants

7.11 3.52

6.06 2.02

8.00 4.91

6.87 3.22

4.77 1.92

Is there sufficient evidence to indicate that the mean annual percentage turnover for U.S. plants exceeds the corresponding mean percentage for Japanese plants? Test using α = .05. This is a t-test: Two-sample independent groups assuming equal variances.

Reference no: EM13112809

Probability of required university score

A prestigious university requires a score of at least 750 on a graduate exam for admission to its MBA program. Suppose the graduate exam is normally distributed with a mean

Determine the linear regression model

Determine the linear regression model to predict the cost of a house. Given that the 145 is the estimated mean value of Y when X is zero and 7.4 is the estimated mean value

Probability at least one of systems will detect the attack

If two detection systems are installed in the same area and operate independently, what is the probability that at least one of the systems will detect the attack?

Determining role of hypothesis testing

Suppose that your company manufactures computer equipment and you must determine if a supplier of your company meets the required product specifications.

Determining number game problem

Take any number, square it, and add 6, multiply by the original number. Now add 5 to that. Now divide this by the original number plus 1. Now subtract your original number a

Recall the st petersburg game

Recall the St. Petersburg game. It starts at $2. Toss a coin and if a head appears, the pot doubles. If tails appears, you win the pot at that time and the game ends. So, if

Autumn 2002 exam

Sketch a cumulative relative frequency polygon (an Ogive) for these data. Show all workings and the sketch in your answer booklet. Don't forget to label all axes and include

Student mean score in the class

A student receives test scores of 62, 83, and 91. The student's final exam score is 88 and homework score is 76. Each test is worth 20% of the final grade, the final exam i


Write a Review

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd