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Consider Mary''s study of whether the learning of 6th graders on a math lesson is affected by background noise level. Describe the pros and cons of Mary using a repeated measures design for this study. What would you probably choose to do? Support your responses.
Develop a sales forecast for each store for December Plot the data for each store.Use data in table.
A 1982 study indicated that 40% of young adults (18-25 years old) in the U.S. smoked cigarettes. In a later survey of 1500 young adults, 536 were found to be smokers. Do the data indicate that the smoking rate for young adults in the U.S. has decreas..
The focus of the research will be in restaurant and coffee field, may you write this in the problem statement and must write it in the scope of the study.
A Gallup Poll used telephone interviews to survey a sample of 1025 U.S. residents over the age of 18 regarding their use of credit cards. The poll reported that 76% of Americans said that they had at least one credit card. Give the 95% margin of erro..
Computer output from a multiple regression model with three independent variables yields the following estimated regression equation: 20.9 + 1.4X1 + 4.2X2 - 0.7X3.
1)Customers enter a store according to a Poisson process of rate A = 6 per hour. Suppose it is known that but a single customer entered during the first hour. What is the conditional probability that this person entered during the first fifteen minut..
Scores by women on the SAT-I test are normally distributed with a mean of 998 and a standard deviation of 202. Scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6. Assume that the two tests ..
What is a 95% confidence interval
Relationship between the average Wonderlic score and graduation rate?
On any given flight, an airline's goal is to fill the plane as much as possible without overbooking. If, on average, 10% of customers cancel their tickets, all independently of each other, what is the probability that a particular flight will be o..
The lengths of Chinese giant salamanders can be modeled by a normal distribution with a mean of 113 cm and a standard deviation of 22 cm. 1. What percent of the Chinese giant salamanders do you expect to measure between 100 and 135 cm?
A service call has just come in, but the type of malfunction is unknown. It is 3.00 P.M. and service technicians usually get off at 5:00 P.M. What is the probability the service technician will have to work overtime to fix the machine?
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