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A quiz consists of 20 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 60%.
You are the general marketing manager of Ford Motor company. The CEO of the company asked you to assess the viability of producing alternative fuel automobiles (ex, ethanol).
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
at a large local hospital 20 teen volunteers worked a total of 172 hours with a standard deviation of 3.6. thirty
How many days should be considered if a 95 percent confidence is used and the estimate is to be within one hundred dollars?
a simple random sample of size n is drawn from a population that is normally distributed. the sample mean x is found to
in boston record game fishes it is stated that in the cozumel region approximately 40 of strikes while trolling result
Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.
A traffic study at one point on an interstate highway shows that vehicle speeds are normally distributed with a mean of 61.3 mph and a standard deviation of 3.3 mph.
Calculate the test statistics
Using these data, construct a 99% confidence interval to estimate the average number of days and excavator is rented to a client, and assume the number of days per rental is normally distributed in the population.
a sample of 36 patients in a doctors office showed that they had to wait an average of 45 minutes with a standard
Suppose a candidate running for sheriff claims that she will reduce the average speed of emergency response to less than 30 minutes.
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