34. The Edwards's Theater chain has studied its movie customers to determine how much money theyspend on concessions. The study revealed that the spending distribution is approximately normallydistributed with a mean of $411 and a standard deviation of $1.37. What percentage of customerswill spend less than $3.00on concessions? *A. 20.98B. -81.10%C. 4.11 %D. 1.37%35. In a 300m speed skating race, time results would be considered an example of which level ofmeasurement?"A. RatioB. OrdinalC. NominalD. Interval36. If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z-score for aScore of 18? *A.11В. -1.41С. 2D. -237. What is a definition of the standard error?*A. Standard deviation of the population mean.B. Standard deviation of the sampleC. Standard deviation of sample means.D. Squared standard deviation38. A study was done to compare the lung capacity of coal miners to the lung capacity of farmworkers. The researcher studied 200 workers of each type. Other factors that might affect lungcapacity are smoking habits and exercise habits. The smoking habits of the two worker types aresimilar, but the coal miners generally exercise less than the farm workers. Which of the following isthe explanatory variable in this study? *A. OccupationB. Smoking or notC. ExerciseD. Lung capacity39. Which of the following sets of scores has the greatest variability (range)?А. 13, 13, 13, 13B. 2, 5, 8, 11C. 20, 25, 26, 27D. 42, 43, 44, 45

Answered: Image /qna-images/answer/d7c5ccf3-f867-4740-a3c8-37cf7b5f5a91.jpg

Answered: 34. The Edwards's Theater chain has…

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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The average McDonald's restaurant generates $3.6 million in sales each year with a standard deviation of 0.9. Trent wants to know if the average sales generated by McDonald's restaurants in Kentucky is different than the worldwide average. He surveys 27 restaurants in Kentucky and finds the following data (in millions of dollars): 4.1, 2.8, 4.4, 4.5, 5.3, 5, 3.7, 2.9, 3.8, 4.8, 3.6, 2.3, 3.7, 2.9, 2.9, 4, 1.1, 5.2, 2.9, 5, 4, 4, 5.9, 3.2, 2.2, 4.3, 3.8 Perform a hypothesis test using a 3% level of significance. Step 1: State the null and alternative hypotheses. Ho: [? v] ? v На: ? ? v (So we will be performing a Select an answer test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer v with distribution mean and distribution standard deviation Step 3: Find the p-value of the point estimate. P( ? v ? v = P( ? ♥ ?…
Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for a portion of the salespeople in the organization for the most recent fiscal year. a. Compute the mean (in $1000), variance (in $10002), and standard deviation (in $1000) for these annual sales values. Round your answers to the nearest whole number. b. In the previous fiscal year, the average annual sales amount was 290 thousand with a standard deviation of 95 thousand. Discuss any differences you observe between the annual sales amount in the most recent and previous fiscal years. Which of the following is correct? (i) The difference in the mean annual sales amount is very small and is most likely due to random change in demand for these products. (ii) The sample mean annual sales amount and standard deviation for the previous fiscal year were significantly higher. (iii) The sample mean annual sales amount and standard deviation for the previous fiscal year were significantly…
1. According to one study, the average hours of sleep on a weeknight for men was 6.9 hours with a standard deviation of 1.5 hours. a. Find the proportion of men who sleep for more than 8 hours per night. b. Find the proportion of men who sleep for less than 6 hours per night. c. Find the proportion of men who sleep between 6-8 hours per night. d. Find the number of hours that represents the 90th percentile.
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A shopper at a local supermarket has spent these amounts in his last eight trips to the store: $32.92, 14.14, 30.80, 28.34, 75.58, 36.33, 33.51, and 22.94. Which statement about deleting the amount spent of $75.58 is false? a. The median of this data set may be more representative of the mean. b. The value of the mean would be reduced by $5.89. c. The value of the mean would not change. d. The value of the mean would be greatly reduced.
Construct a quantile graph. Explain why or why not the data set provided has a normal distribution: 5.5, 6.0, 6.4, 5.7, 7.5, 4.5, 5.5, 5.6, 6.5, 6.0, 5.0, and 6.0. include the graph and response.
2. 60 matches were played in a football tournament. The table to the right shows the number of goals scored in all matches. Number of Goals 1 3 4 5 Number of Matches 18 20 3 a. Find the median number of goals scored per match. b. Find the mean number of goals scored per match. c. Calculate the standard deviation of the goals scored per match.
1. The EPA fuel economy estimates for automobile models tested recently predicted a mean of 24.8 mpg and a standard deviation of 6.2 mpg for highway driving. a. About what percent of cars get less than 31 mpg? b. What percent of cars get more than 20 mpg? c. What percent of cars get between 22 and 30 mpg? d. What gas mileage represents the 75th percentile? e. What gas mileages separate the bottom 3% and top 3% of cars? X
Which of the following five statistics are commonly used together to determine the shape of a distribution? Five answers correct. All or nothing credit. 1. The minimum 2. Variance 3. The 2nd quartile 4. The maximum 5. Coefficient of variation 6. Interquartile range 7. The 1st quartile 8. The 3rd quartile 9. Range 10. Standard deviation

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