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1. Suppose that you are a student worker in the Statistics Department and they agree to pay you using the Random Pay system. Each week the Chair flips a coin. If it comes up heads, your pay for the week is $80, and if it comes up tails, your pay for the week is $40. You work for the department for two weeks. Let be the average of the pay you receive for the first and second week. The sampling distribution of is : $40 $60 $80
A. given by the following probability distribution. Probability: 0.25 0.50 0.25B. approximately normal with mean $60 and standard deviation 14.14.C. exactly normal with mean $60 and standard deviation 14.14.
2. The scores of individual students on the American College Testing (ACT) Program composite college entrance examination have a Normal distribution with mean that varies slightly from year to year and standard deviation 6.0. You plan to take an SRS of size n of the students who took the ACT exam this year and compute the mean score of the students in your sample. You will use this to estimate the mean score of all students this year. In order for the standard deviation of to be no more than 0.1, how large should n be?
A. at least 60B. at least 3600C. This cannot be determined because we do not know the true mean of the population.
Investigate the cost of a home mortgage and to determine the monthly payment.
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
Prepare a power curve for this decision rule
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
The chance both flights are full is 0.6. Are the two flights being full independent events and What was the mean ranking for the females in this class
The world record time (in minutes) in the marathon is plotted versus the year in which the record was set for men and women separately. The plotting symbol o is used for men and x for women. The data include only records set between 1908 and 1988.
A major study examined the relationship between cause of death (heart attack, cancer, stroke, accident, etc.) and age. A good way to graphically represent the relationship is with
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
Plan the scatter diagram
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
Describe and analyze your quantitative data and Briefly address the data analysis process.
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