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Question: Course grades. Choose a student at random from all who took Math 101 in recent years. The probabilities for the student's grade are
Grade: A B C D F
Probability: 0.2 0.4 0.2 0.1 ?
(a) What must be the probability of getting an F?
(b) To simulate the grades of randomly chosen students, how would you assign digits to represent the five possible outcomes listed?
a car company conducted a study to understand the relationship between age groups and drivers primary vehicles. their
Use regression to develop a trend line that could be used?to forecast monthly sales for the next year. Is the slope of?this line consistent with what you observed in question 1? ?If not, discuss a possible explanation.
The bus averaged 40 mph on the drive from Columbus to Athens but averaged 60 mph during the return trip. What was the average speed of the bus for the entire trip?
From two censuses of a population's occupations, carried out in 2000 and 2010, the following figures were obtained (all values are in ‘000s).
according to an irs study it takes a mean time of 330 minutes for taxpayers to prepare copy and electronically transfer
The firm uses $200,000 of its cash balance to pay off a current liabilities. Calculate the current ratio before and after this transaction.
Suppose the world series is about to begin. Some people get together and each decide to predict different win-loss patterns for the seven possible games during the coming series.
Provide an example of how you could/would apply a hypothesis test using Chi Square. State the null and alternate hypotheses. You do not need to complete the entire five step process using actual numbers.
The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision,
you have been recently hired as a marketing analyst in an advertising agency. you are assigned the task of assessing
Identifying Gender Discrimination After being rejected for employment. Does the resulting probability really support such a charge?
Several samples of size 56 are randomly selected and means computed. What value would you expect to determine for standard deviation of all these sample means?
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