Do male and female servers at Swank Bar work the same number of hours? A sample of 45 female serversworked an average of 24 hours per week, with a standard deviation of 4. A sample of 45 male serversworked an average 'of 40 hours per week, with a standard deviation of 2.Let ui and u2 represent the typical number of hours worked by all female and male servers at Swank Bar,respectively. Estimate with a 94% confidence level how many more hours female servers work. Roundanswers to two decimal places.41 - 42<Which of the following does your data suggest?O Female and male servers work about the same number of hoursO Female servers work more hoursOMale servers work more hours> Next Question

From the given information we find the solution.

Answered: o male and female servers at Swank Bar…

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 researcher claims that the mean age of women in California at the time of a first marriage is higher than 26.5 years. Surveying a simple random sample of 210 newlywed women in California, the researcher found a mean age of 27.0 years. Assuming that the population standard deviation is 2.3 years and using a 95% level of confidence, determine if there is sufficient evidence to support the researcher’s claim.
A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples, the mean number of minutes spent watching television was 48.4 minutes, with a standard deviation of 18.1 minutes. At the .01 significance level, can we conclude that the single-earner couples on average spend more time watching television together? There were 15 single-earner and 12 dual-earner couples studied.
A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples the mean number of minutes spent watching television was 48.4 minutes, with a standard deviation of 18.1 minutes. At the .01 significance level, can we conclude that the single-earner couples on average spend more time watching television together? Fifteen single-earner and 12 dual-earner couples were studied. MUST USE CRITICAL VALUE, NO P VALUE AND NO EXCELL ALL WORK
A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples, the mean number of minutes spent watching television was 48.4 minutes, with a standard deviation of 18.1 minutes. At the 0.01 significance level, can we conclude that the single-earner couples on average spend more time watching television together? There were 15 single-earner and 12 dual-earner couples studied. Hint: For the calculations, assume the single-earner as the first sample. Is this a one-tailed or a two-tailed test? multiple choice 1 One-tailed test. Two-tailed test. State the decision rule. (Round your answer to 3 decimal places.) Compute the value of the test statistic. (Round your answer to 3 decimal…
Estimate the average number of feathers that a mature tom turkey has with 90% confidence interval by using a sample of 32 turkeys that had a mean of 3450 feathers and a standard deviation of 25 feathers.
A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief, μ1 , is greater than or equal to the annual spending (per person) for non-prescription allergy relief medicine, μ2 . A health insurance company conducted an independent study and collected data from a random sample of 285 individuals for prescription allergy relief medicine. The sample mean is found to be 17.5 dollars/year, with a sample standard deviation of 4.8 dollars/year. They have also collected data for non-prescription allergy relief medicine. An independent random sample of 275 individuals yielded a sample mean of 18.5 dollars/year, and a sample standard deviation of 3.8 dollars/year. Since the sample size is quite large, it is assumed that the population standard deviation of the sales (per person) for prescription and non-prescription allergy relief medicine can be estimated by using the…
In order to test average litter size for different breeds, a sample of 25 litter sizes was taken from Abyssinian Cats and a sample of 31 litter sizes was taken from Chinchilla Cats. Abyssinian Cats had a sample average of 3.5 kittens and Chinchilla Cats had a sample average 2.8 kittens. Further, Abyssinian Cats have a known standard deviation of 1.5 kittens and Chinchilla Cats have a known standard deviation of 1.9 kittens. Test to see if there is a statistically significant difference between the average litter sizes of these cat breeds using a 5% level of significance. Should you reject the null hypothesis that there is no difference between the mean litter sizes of the two cat breeds? Or is there not enough evidence to support that the mean litter sizes are different?
A report published by the BZW Luxury Association shows that each American household spent on average$694 on jewelry and watch in 2018. Suppose a sample of 64 households were surveyed while they wereshopping at Macy's, which resulted in a sample mean of $622 and a sample standard deviation of $125. How does the margin of error for a 99% condence interval compare to the margin of error for a 95% condence interval? Based on your the 95% confidence interval result, does it appear that the population mean amount spent by families shopping at Macy's is different from the mean reported? Explain.
A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief, μ1 , is greater than or equal to the annual spending (per person) for non-prescription allergy relief medicine, μ2 . A health insurance company conducted an independent study and collected data from a random sample of 225 individuals for prescription allergy relief medicine. The sample mean is found to be 17.6 dollars/year, with a sample standard deviation of 4.4 dollars/year. They have also collected data for non-prescription allergy relief medicine. An independent random sample of 220 individuals yielded a sample mean of 18.4 dollars/year, and a sample standard deviation of 3.8 dollars/year. Since the sample size is quite large, it is assumed that the population standard deviation of the sales (per person) for prescription and non-prescription allergy relief medicine can be estimated by using the…

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