Find the weighted mean for three exams
Find the weighted mean for three exams if the first one was worth 20% and the student received a 70, the second was worth 50 % and the student received a 90 and the third was worth 30 % and the student received an 80?
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The domestic version of Boeing's 747 has a capacity for 568 passengers. Determine an interval estimate of the number of passengers that you would expect to carry more than one piece of luggage on the plane. Assume the plane is at its passenger cap
Suppose you have a list of salaries of all Major League Baseball players in 2013. Does it make sense to find a 95% confidence interval for the mean salary? If so, what is the relevant population?
Construct a 99% confidence interval for the proportion of vehicles on I-35 during this time period that are 18-wheelers. How might this interval be useful to planners in the department of transportation?
Provide graphical depictions of both the weights and numbers of fries in the sample. Provide numerical descriptions of the weights and numbers of fries in the sample.
A politician claims that she will receive 63% of the vote in an upcoming election. The results of a properly designed random sample of 100 voters showed that 55 of those sampled will vote for her.
Find the lower & upper limits of a confidence interval if the mean is eighteen percent, and the margin of error is 0.020.
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Determine the sample proportions.(b)Decide whether using the two-proportions z-procedures is appropriate.If so,also do parts(c) and (d).(c)Use the two-proportions z-test to conduct the required hypothesis test.(d)Use the two-proportions z-interval
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