A pizza delivery driver, always trying to increase tips, runs an experiment on his next 40 deliveries. He flips a coin to decide whether or not to call a customer fromhis mobile phone when he is five minutes away, hoping this slight bump in customer service will lead to a slight bump in tips. After 40 deliveries, he will compare theaverage tip percentage between the customers he called and those he did not. List the factor, the levels, and the response variable.What are the factor and the levels?The factor isThe levels areWhat is the response variable?The tip percentage for each deliverywhether the customer was called or not.The order size for the 40 deliveriesWhether the customer was called or notthe amount of tip received.The amount of tip for each deliverythe percentage of tip received.whether the customer picked up the phone or not.OO OO A pizza delivery driver, always trying to increase tips, runs an experiment on his next 40 deliveries. He flips a coin to decide whether or not to call a customer fromhis mobile phone when he is five minutes away, hoping this slight bump in customer service will lead to a slight bump in tips. After 40 deliveries, he will compare theaverage tip percentage between the customers he called and those he did not. List the factor, the levels, and the response variable.What are the factor and the levels?The factor isThe levels areWhat is the reThe tip |tip percentage.The ordWhethecalling the customer.The amorder size. .O O O O

Answered: A pizza delivery driver, always trying…

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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At the Carnival game, there are three 1 dollar bills, one 5 dollar bill, and one 10 dollar bill in a bag. It's five dollars to play, and whichever bill you grab from the bag is the one you keep. Say you draw 20 times with the following data: $5, $1, $1, $10, $1, $1, $5, $1, $1, $5, $10, $1, $1, $1, $1, $5, $1, $1, $10, $5 What is the expected value?
K A pizza delivery driver, always trying to increase tips, runs an experiment on his next 40 deliveries. He flips a coin to decide whether or not to call a customer from his mobile phone when he is five minutes away, hoping this slight bump in customer service will lead to a slight bump in tips. After 40 deliveries, he will compare the average tip percentage between the customers he called and those he did not. List the factor, the levels, and the response variable. What are the factor and the levels? The factor is What is the response variable? O The levels are The order size for the 40 deliveries The amount of tip for each delivery Whether the customer was called or not The tip percentage for each delivery
Camden read about a study in which 200 vegetarians were asked to sample a fruit bar. The study reported that 170 of the 200 vegetarians surveyed disliked the bar. The study had a margin of error of 4%. Which statement can be concluded from this report? A. It is likely that between 81% and 89% of vegetarians will dislike the fruit bar. B. It is likely that between 81% and 89% of people will dislike the fruit bar. C. Approximately 85% of people who like fruit will dislike the fruit bar. D. Approximately 85% of people surveyed do not like fruit.
A drug company claims that an allergy medication causes headaches in 5% of those who take it. A medical researcher believes that more than 5% of those who take the drug actually get headaches. Identify the population(s). more than 5% of those who take the drug actually get headaches. the proportion of those who take the drug who get a headache. 5% of those who take the drug actually get headaches. all individuals who take the medication. What is the variable being examined for individuals in the population(s)? more than 5% of those who take the drug actually get headaches. the proportion of those who take the drug who get a headache. whether or not a person who takes the drug gets a headache. 5% of those who take the drug actually get headaches. Is it categorical or quantitative? Quantitative Categorical Identify the parameter(s). the mean of those who take the drug who get a headache. the proportion of those who take the drug who get a headache. all individuals who…
The value of a certain car when it was brand new with 0 mileage was $17,000 but the value dropped to $4,000 when the car acounulated 80,000 miles shown in the scatter plot below. Car's Mleage and Value S17.000 $2,000 Mileage Based on the data in the scatter plot, at what mileage was the car worth about $12,000? O 20,000 miles O 30,000 miles O 60,000 miles O 80,000 miles
Several years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 63% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is. (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…
A fundraiser is offering a small gift to people making a donation. The donor can choose one of four gifts: a mug, a t-shirt, a plush toy, or a water bottle. The fundraiser would like to know if any of the gifts were more or less popular or were they equal in preference. The data for n = 40 donors are below:
The Chair of Psychology, Dr. Vicary, takes her cat, Fluff, to the veterinarian for an annual checkup. The vet gives Dr. Vicary the results in Z scores: Fluff's Weight Z = -1.88 & Fluff's Temperature Z = 1.15 What might the vet recommend for Fluff's weight? blank What might the vet recommend for Fluff's temperature? blank Feed Fluff extra meals Put Fluff on a diet Care for Fluff as usual Knit Fluff a sweater Trim Fluff’s very thick coat Care for Fluff as usual
In a statistics activity, students are asked to spin a penny and a dime and determine the proportion of times that each lands with tails up. The students believe that since a dime is lighter, it will have a lower proportion of times landing tails up compared with the penny. The students are instructed to spin the penny and the dime 30 times and record the number of times each lands tails up. For one student, the penny lands tails side up 18 times, and the dime lands tails side up 20 times. Let pp = the true proportion of times a dime will land tails up and pp = the true proportion of times a penny will land tails up. The P-value for this significance test is 0.296. Which of the following is the correct conclusion for this test of the hypotheses H Pp-Pp=0 and H, Po-Pp 0.05. There is sufficient evidence that the true proportion of times a dime will land tails up is significantly less than the penny. O The student should reject the null hypothesis since 0.296 > 0.05. There is insufficient…
Determine whether the study depicts an observational study or an experiment. A scientist was studying the effects of a new fertilizer on crop yield. She randomly assigned half of the plots on a farm to group one and the remaining plots to group two. On the plots in group one, the new fertilizer was used for a year. On the plots in group two, the old fertilizer was used. At the end of the year the average crop yield for the plots in group one was compared with the average crop yield for the plots in group two.
I can't understand why the data is the percentage of surveyed parents.
What percentage of data would you predict would be between 25 and 50 and what percentage would you predict would be more than 50 miles? Use the Week 4 spreadsheet again to find the percentage of the data set we expect to have values between 25 and 50 as well as for more than 50. Now determine the percentage of data points in the dataset that fall within each of these ranges, using same strategy as above for counting data points in the data set. How do each of these compare with your prediction and why is there a difference? Predicted percentage between 25 and 50: ________________________ Actual percentage: Predicted percentage more than 50 miles: Actual percentage: ___________________________________________ Comparison ____________________________________________________ Why? __________________________________________________________ Drive: 44 20 88 6 71 42 76 63 61 63 84 28 55 33 88 80 86 83 5 85 25 25 54 54 81 73 29 76 78…

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