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One year, professional sports players salaries averaged $2 million with a standard deviation of $1 million. Suppose a sample of 40 major league platers was taken. find the approximate probability that the average salary of the 400 players exceeded $1.1 million.
A random sample of five observations from the first sample resulted in a standard deviation of (12). A random sample of seven observations from the second sample gave a standard deviation of (7) at the (.01) significance level.
Calculate the total cost of interest for both mortgage options. How much does the buyer save in interest with the 20 year option ?
Provide an explanation of a chi-square test. Why would you use the chi-square statistic? What type of data is used with chi square analysis?
question a volunteer ambulance service handles zero to three service calls on any given day. the probability
Utilizing your charts stated whether the filling operation has been in control for every of the 18 operating hours this day.
Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
Use the study to estimate the risk of an air bag fatality on a child seated on the front passenger seat.
If a baseball player's batting average is 0.340 or 34%, find the probability that the player will have a bad season and only score at most 60 hits in 200 times at bat?
A marketing firm recently studied the number of times men and women who live alone that buy takeout dinners in a month. Two independent samples were taken one with 50 men and 55 women.
Heights of People - The average height of a certain age group of people is 53 inches. The standard deviation is 4 inches. If the variable is normally distributed, find the probability that a selected individual's height will be:
Employees of a local company are classified according to gender and job type. The following table summarizes the number of people in each job category.
A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to do a statistical test regarding the mean monthly mileage
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