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What is the preferred wayfor people to order fast food? A survey was conducted in 2009, but the samplesizes were not reported. Suppose the results, based on a sample of 100 males and 100 females,were as follows:
GENDER
DINING PREFERENCE Male Female Total
Dine inside 21 12 33
Order inside to go 19 10 29
Order at the drive-through 60 78 138
Total 100 100 200
a. Given that a respondent is a male, what is the probability thathe prefers to order at the drive-through?
b. Given that a respondent is a female, what is the probabilitythat she prefers to order at the drive-through?
c. Is dining preference independent of gender? Explain
Customers arrive at an automated coffee vending machine at a rate of 3 per minute, following a Poisson distribution. The coffee machine dispenses a cup of coffee in exactly 15 seconds.a. What is the average number of people waiting in line?
Use decision analysis tools discussed in class to determine what action the firm should pursue in order to minimize expected loss; either manual analysis or software is acceptable. Please also calculate the minimum expected loss.
A random variable x has mean -4 and E(X)^2=20. What is the standard deviation of X.
State a research question for which a single-group post-test only design can yield relatively unambiguous findings.
allelectronics caries 1000 products p1 . p1000. consider customers ada bob and cathy such that ada and bob purchase
According to the Center on Budget and Policy Priorities article "Curbing Flexible Spending Accounts Could Help Pay for Health Care Reform" (revised June 10, 2009), flexible spending accounts encourage the over-consumption of health care; people buy t..
the hypothesis that there is a relationship between perceptions of police performance and area of the city for Montgomery. What might you tell the police chief?
Bob's golf score at his local course follows the normal distribution with a mean of 92.1 and a standard deviation of 3.8. What is the probability that the score on his next round of golf will be between 82 and 89?
Resource-selection analysis compares the distributions of animals relative to the distribution of habitat. If the two don't agree, there is evidence of selection. A survey of 106 moose found that 24 were located in "In burn - interior," 22 in "..
Let variable X represents the improvement in time for each assembly line worker. Let μ represents the average improvement in time for the population. Has the training improved the time required on the job? Please test the hypothesis use α=0.05 ..
Fall beyond or between the designated ages/scores.
Recorded the time in seconds it took for 8 participants to solve a puzzle. These times appear below. However, when the data was entered into the statistical program, the score that was supposed to be 22.1 was entered as 21.2. You had calculate..
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