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In a recent study of 44 eighth graders, the mean number of hours per week that they watched television was 19.5 with a standard deviation of 5.1 hours. Find the 98% confidence interval for the mean number of hours per week eighth graders watch television.
q1. in the poker game a hand is a set of 5 cards chosen randomly from a usual deck of 52 cards.a how many straight
How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of dri..
lets say a publisher makes one typo per 1000 pages. without using the formula or calculating any numerical answers
Flights arriving at the airport spend anywhere from 50 to 130 minutes in security before unloading passengers. If the unloading times follow the uniform probability distribution, find the average unloading time.
The ages of 25 employees in a company are listed below in a stem and leaf plot. What is the probability that a worker chosen at random will have an age greater than or equal to 30 and less than or equal to 39?
A box contains 5 red marbles and 10 blue marbles. You can take 3 marbles at random, without replacement. What is the probability of winning this game?
Tthe amount is approximately normally distributed with a mean of 16 and a standard deviation of 1.5. What percent of the cups will have 15 oz or fewer?
Suppose that data is recorded for equal period of "before"-"after" time. Use 1% level for risk. Given processed data, explain what John must do.
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
Compute the 95% confidence and prediction intervals for values of y for X = 40. Determine correlation coefficient, Interpret.
samples of 10 seats of each type a b c were selected and given the safety test. the scores are given below. is one
Suppose you want an 85 percent confidence level. What value would you use to multiply the standard error of the mean?
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