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The mean time to download an Google video is 1 minute 30 seconds. Suppose the download time is normally distributed with standard deviation of 20 seconds.
a) What is the probability that it took more than 2 minutes to download a randomly selected video?
b) What percentage of videos can be downloaded in less than 1 minute?
Find the confidence interval for the mean price, μ, of all dealer sticker prices of new cars: for a confidence level of 90% in thousands of dollars:
At the .01 level of signiicance, is the true mean greater than 10?
Find the value for the correlation coefficient r.
Determine the probability that sample mean is between 7.5 and 8 minutes?
Analysis of data sets assignment
Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?
If person is selected at random and tested, determine the probability of that person having an IQ score between 85 and 115. Make use of EXCEL to help determine the probability.
Create a 99 percent confidence interval for mean daily intake of milk. You may suppose daily intake amounts are usually distributed.
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study so that the two factors are smoking level and gender.
Illustrate by computation that, for straight -line regression of Y on x, β1= 0.
What is the probability that a cereal would either high calorie or high fiber? In other words, what is P(high calorie or high fiber)?
Compute an F-statistic for each linear construct and determine its significance.
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