Question 6A survey of newly graduated accounting and marketing students were studied. A randomsample of 40 new accountants and a random sample of 50 new marketing executive wereselected in Singapore. Accountants have a mean of $3500 per month and marketingexecutives have a mean of $3200. The population standard deviation of accountants andmarketing executives are $500 and $450 per month respectively.(a)Apply a suitable hypothesis test with a = 0.05 to determine if there a difference betweenthe monthly salaries of the accountants and marketing executives.(b)Is the difference of $300 between accountants and marketing executives due to chance?

For the accountants:The sampled size, i.e., the sampled number of new accountants, n1=40.The mean…

Answered: Question 6 A survey of newly graduated…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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QUESTION 1 A health researcher read that a 150-pound college-aged, male can burn an average of 530 calories per hour playing tennis with a standard deviation of 25 calories. 40 college-aged males were randomly selected at a commuter school and the mean number of calories burned per hour playing tennis was 540 calories. Do college-aged male tennis players at the commuter school burn more calories per hour than the college-aged, male tennis player population? Test with a 0.05 significance level. What are the hypotheses? Null and Alternate
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Question 2 (a) A HR manager would like to survey the salary of the junior accountant in Malaysia to analyse the market trend. He found that it is normally distributed with a population mean of RM 2900 and a population standard deviation of RM 250. One day, he selects a random sample of the salaries of 30 junior accountants. (i) What is the probability that the sample mean salary will be between RM 2800 and RM 3000? What is the probability that the sample mean salary will be below RM 2850? (ii) (iii) The probability is 99% that the sample mean salary of the junior accountant will be between which two values (symmetrically distributed around the mean)? (iv) Do you think he will be likely to get the sample mean salary more than RM 3200? Justify your answer with probability.
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Question 3 A. The management of White Industries is considering a new method of assembling its golf cart. The present method requires a mean time of 42.3 minutes to assemble a cart. The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Using the .10 level of significance, can we conclude that the assembly time using the new method is faster? B. Do married and unmarried women spend the same amount of time per week using Facebook? A random sample of 45 married women who use Facebook spent an average of 3.0 hours per week on this social media website. A random sample of 39 unmarried women who regularly use Facebook spent an average of 3.4 hours per week. Assume that the weekly Facebook time for married women has a population standard deviation of 1.2 hours, and the population standard deviation for unmarried Facebook users is 1.1 hours per week. Using the .05…

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