The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one ofthree different lines that have formed at three teller windows. Answer the following questions.Bank A6.46.66.76.87.17.37.47.87.87.85.55.86.26.67.77.78.59.210.0Bank B4.2Click the icon to view the table of Chi-Square critical values......Construct a 95% confidence interval for the population standard deviation o at Bank A.min < OBank Amin(Round to two decimal places as needed.)Construct a 95% confidence interval for the population standard deviation o at Bank B.min < OBank B < min(Round to two decimal places as needed.)Interpret the results found in the previous parts. Do the confidence intervals suggest a difference in the variation among waiting times? Does the single-line system or the multiple-line system seem to be a betterarrangement?O A. The variation appears to be significantly lower with a multiple-line system. The single-line system appears to be better.B. The variation appears to be significantly lower with a single line system. The multiple-line system appears to be better.C. The variation appears to be significantly lower with a multiple-line system. The multiple-line system appears to be better.D. The variation appears to be significantly lower with a single line system. The single-line system appears to be better.

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Answered: The values listed below are waiting…

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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SAT Math Suppose that scores on the SAT Math test are approximately normal with a mean of 500 and a standard deviation of 100. Let X denote the score on a randomly selected student. Use the Z table to find the following values.
A researcher believed that the number of rental cars in service by a car rental company would have an impact on the total annual revenue for that car rental company. Five small car rental companies were surveyed, with the number of Cars in service recorded in units of 1000 (so if a car rental company had 54000 cars in service, a 54 would be recorded) and Annual Revenue measured in millions of dollars (so an Annual Revenue of $10,000,000 would be recorded as 10). The data follows: Cars (1000s) Annual Revenue ($ millions)11.5 118 10.0 135 9.0 100 5.5 37 3.3 32 Part of the Excel-generated Simple Linear Regression output is provided below: ANOVA df SS MS F Significance F Regression 1 7891.863897 7891.863897 22.91180151 0.017339231 Residual 3 1033.336103 344.4453677 Total 4 8925.2…
The owners of an amusement park count the number of adults and children who attend the park on a Friday and Saturday. The completed table is shown below. Friday Saturday Total Adults 245 371 616 Children 154 277 431 Total 399 648 1,047 How does the joint frequency for the number of adults who attended the amusement park on Friday compare to the joint frequency for the number of children who attended the amusement park on Saturday? The joint frequency for the number of adults who attended the amusement park on Friday is 399, which is less than the joint frequency for the number of children who attended the amusement park on Saturday, 431. The joint frequency for the number of adults who attended the amusement park on Friday is 154, which is less than the joint frequency for the number of children who attended the amusement park on Saturday, 277. The joint frequency for the number of adults who attended the amusement park on Friday is 371, which is…
Researchers wanted to know the effectiveness of a new allergy medicine. A study was conducted on 500 adults who experience allergy symptoms. Each adult was randomly assigned to receive the new allergy medicine or a placebo. Researchers recorded whether or not their symptoms improved within 1 week. a. Complete the two-way table summarizing the findings. Allergy Medicine Placebo Total Symptoms Improved 85 80 Symptoms DidNot Improve Total 215 285 500 b. Use the study results to complete the following. Round your answer to the nearest tenth of a percent, as needed. Notice the percent sign is already included, so you just need to type the number. What percent of the adults in this study were given the new allergy medicine? % What percent of those who experienced improvements received the allergy medicine? % What percent of those who received the allergy medicine experienced improvements? % What percent of those who did not received the allergy…
indicate whether the following statements show positive or negative relationships: Positive Negative The more hours of TV watched per day, the less people will exercise. O OThe greater your social network, the more likely you are to get a job offer. O OThe lower the temperature outside, the lower the crime rate. O OThe less a woman weighs, the more likely she will have a bone fracture. O O
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The boxplots show data for state and local community expenditures on police and fire protection. Police Estimate Q,, Q2, and Q, for police and fire protection spending.. Fire 0.5 1 1.5 2 25 3 3.5 Billions of Dollars Q, for police spending is (Round to one decimal place as needed.) Q, for police spending is O (Round to one decimal place as needed.) Q, for police spending is (Round to one decimal place as needed.) Q, for fire protection spending is (Round to one decimal place as needed.) Q, for fire protection spending is (Round to one decimal place as needed.) Q, for fire protection spending is (Round to one decimal place as needed.)
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FIND THE ANSWERS FOR B-2 and C. A survey found that Massachusetts residents spent an average of $861.75 on the lottery, more than three times the U.S. average. A researcher at a Boston think tank believes that Massachusetts residents spend less than this amount. He surveys 100 Massachusetts residents and asks them about their annual expenditures on the lottery. (You may find it useful to reference the t table.) Click here for the Excel Data File a. Specify the competing hypotheses to test the researcher’s claim.multiple choice 1 H0: μ ≥ 861.75; HA: μ < 861.75 b-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round final answer to 3 decimal places.) -0.863 b-2. Find the p-value.multiple choice 2 p-value < 0.01 0.01 p-value < 0.025 0.025 p-value < 0.05 0.05 p-value < 0.10 p-value 0.10 c. At α = 0.10, what is the conclusion?multiple choice 3 Reject H0; there is insufficient evidence…
The table shows the leading causes of death in a certain country in a recent year. The population of the country was 311311 million. If you lived in a typical city of 500,000, how many people would you expect to die of cancercancer each year? Cause Deaths Cause Deaths Heart disease 596 comma 700596,700 Alzheimer's disease 84 comma 90084,900 Cancer 575 comma 300575,300 Diabetes 73 comma 40073,400 Chronic respiratory diseases 143 comma 100143,100 Pneumonia/Influenza 53 comma 40053,400 Stroke 128 comma 600128,600 Kidney disease 45 comma 30045,300 Accidents 122 comma 500122,500 Suicide 38 comma 60038,600 About people would be expected to die of cancer each year. (Type a whole number. Round to the nearest person as needed.)

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