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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A random sample of 89 tourists in British Columbia showed that they spent an average of $2860 (in a week) with an assumed population standard deviation of $126; and a sample of 64 tourists in Alberta showed that they spent an average of $2935 (in a week) with an assumed population standard deviation of $138. We are interested in determining if there is any significant difference between the average expenditures of all the tourists who visited the two provinces.a. At a significance level of 0.05, are the two average expenditures significantly different? b. Calculate the 99% confidence interval and interpret your results?
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The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million and a standard deviation of $2 million. The salaries of professional football players are also heavily skewed right with a mean of $1.9 million and a standard deviation of $1.5 million. A random sample of 40 baseball players’ salaries and 35 football players’ salaries is selected. The mean salary is determined for both samples. Let represent the difference in the mean salaries for baseball and football players. Which of the following represents the shape of the sampling distribution for ? skewed right since the populations are both right skewed skewed right since the differences in salaries cannot be negative approximately Normal since both sample sizes are greater than 30 approximately Normal since the sum of the sample sizes is greater than 30

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