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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.
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.
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
Compute the range and interquartile range
Using the Census data, the OH Registry of Motor Vehicles reveal the subsequent about the Autos owned by the 10 families residing in Smallville.
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
Analysis of data sets assignment
LINEAR PROGRAMMING MODELS
High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood su..
Which of the following statements is consistent with the scatterplot
Describe and analyze your quantitative data and Briefly address the data analysis process.
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
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