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An insurance company estimates 45 percent of its claims have errors. The insurance company wants to estimate with 95 percent confidence the proportion of claims with errors. What sample size is needed if they wish to be within 4 percentage points of the actual?
a presidential candidate plans to begin her campaign by visiting the capitals in 4 of 47 states. what is the
a passenger can travel from home to another city by car c ship s place p or train t. in a given year the passenger
let ia be an indicator function of a.a show that the indicator of a compliment is 1- indicator of a.b show that the
fitting of multiple linear regression equation.the revenues gained from sales of books from an e-book supplier the book
Winnipeg during rush hour are occupied by just the driver. If you choose 12 vehicles at random, what is the probability that 7 or more carry just the driver?
Promotion occurs on average every 10 days in a large corporation. What is the probability that the next promotion will occur within:
The Duracells had an average lifetime of 18.67 hours (SD = 1.176 hours) while the Energizer batteries had an average lifetime of 16.83 hours (SD = 2.878 hours). Assuming the population standard deviations to be equal, what is the test statisitic a..
Explain what an outlier is. Then, if there are any outliers in the Project 1 Data Set, what are they? If there are no outliers, say no outliers.
If he were to randomly select 120 corks from the next box, then how many of these corks would John expect to be undersized?
Compute the test statistic. Using = 0.05, perform the test using either the critical value approach or the p-value approach. What is your conclusion?
Use the population mean and standard deviation to find the z-score corresponding to 14.5%, the rate offered by the Bar Harbor Bank and Trust Company. Is this above or below the average?
suppose 80 of the college football fans root for the home team. if 400 fans who attended a college football game last
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