Hello,In this stats problem I'm not sure how to solve for the boxes that are empty The management at New Century Bank claims that the mean waiting time for all customers at its branches is less than that at thePublic Bank, which is its main competitor. A business consulting firm took a sample of 214 customers from the New Century Bankand found that they waited an average of 4.35 minutes before being served. Another sample of 280 customers taken from thePublic Bank showed that these customers waited an average of 4.60 minutes before being served. Assume that the standarddeviations for the two populations are 1.22 and 1.53 minutes, respectively.Let 4, be the mean waiting time for all customers at New Century Bank, and H, be the mean waiting time for all customers at thePublic Bank.a. Make a 90% confidence interval for the difference between the two population means.Round your answers to two decimal places.! to i! minutes.b. Test at a 2.5% significance level whether the claim of the management of the New Century Bank is true.Round your answer to two decimal places.Observed valued of z = iConclusion: RejectНо-Conclude that the mean waiting time for all customers at New Century Bank branches is less thanthat at the Public Bank.The bank's claim is true :c. Calculate the p-value for the test of part b. Based on this p-value, would you reject the null hypothesis if a = 0.01? What ifa = 0.05?Round your answer to four decimal places.p-value =

Given: n1=214, x¯1=4.35 and σ1=1.22 n2=280, x¯2=4.60 and σ2=1.53 σ1 and σ2 are the population…

Answered: The management at New Century Bank…

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 marketing firm wishes to test the effectiveness of the audio/visual presentation of certain information as opposed to the purely audio presentation of the information. To this end 100 volunteers were given a 10 minute presentation in which the information was presented in an audio/visual format. A second group of 100 volunteers was presented the same information in a purely audio format. Each person in each of the two groups was asked the same 20 questions related to the information in the presentation. The audio/visual group had an average of 10.5 correct responses with a sample standard deviation of 4. The purely audio group had an average of 9.4 correct responses with a standard deviation of 3. The marketing firm believes this means that the audio/visual format leads to better retention of the information. We test the hypotheses H0: 1 -2=0 versus Ha: 1 -2>0 at a 2% level of significance. Here denotes 1 the population average number of correct responses for…
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A marketing firm wishes to test the effectiveness of the audio/visual presentation of certain information as opposed to the purely audio presentation of the information. To this end 100 volunteers were given a 10 minute presentation in which the information was presented in an audio/visual format. A second group of 100 volunteers was presented the same information in a purely audio format. Each person in each of the two groups was asked the same 20 questions related to the information in the presentation. The audio/visual group had an average of 10.5 correct responses with a sample standard deviation of 4. The purely audio group had an average of 9.4 correct responses with a standard deviation of 3. The marketing firm believes this means that the audio/visual format leads to better retention of the information. We test the hypotheses H0: 1 -2=0 versus Ha: 1 -2>0 at a 2% level of significance. Here denotes 1 the population average number of correct responses for…
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