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A work-study engineer times a certain operation, and discovers that the average time it takes is 10 minutes, but on 15% of occasions it takes more than 13 minutes. Assuming that times for the operation follow a normal distribution, what is its standard deviation?
Does your analysis change if the term "average" refers to the mean? To the median? Explain what effect this misinformation might have on the perception of the nation's schools.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Write ten-step study plan with suitable example that will permit you to analyze your data.
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
Is this statistically significant evidence that candidate has sufficient valid signatures overall? Describe.
What proportion of the variability in steel shipments for motor vehicles is described by regression equation?
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Fitting of simple linear regression equation - A researcher wishes to determine whether a person's age is related to the number of hours he or she jogs per week.
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
Jim and Mike go to a coffee shop during their lunch break and toss a coin to see who will pay. The probability that Mike will pay three days in a row is 0.125.
Normal approximation to the Binomial distribution - Evaluate the probability that at least 195 of the students are female.
Statistics practice questions answers in a correct order and if possible copy all the graphs in excel. How large a sample size (trading days) is needed to estimate the population mean number of shares traded per day to within 100 million with 95% co..
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