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Actions to improve the repair time of equipment used to produce electronic components were taken two years ago. The average repair times per month since then are:
What is the probability that a satisfactory robot will be overhauled unnecessarily? What is the probability that a robot in need of overhauling will be left in operation?
Laura needs to buy 10 boxes of strawberries for her party. What is the expected value and variance of the total weight of Laura's strawberries?
Assuming that this sample is representative of the cars in use, construct a 98% confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars. If the EPA requires that ni
Assume that you calculated a 95% confidence interval for the mean newborn length of babies born in the United States to be 17 to 20 inches. Explain in words what this confidence interval means. Note
Derive the formulas for the lower and upper conf bound given in the lecture notes, starting from the given self-evident facts. The answer will be for a general confidence level (95% confidence)
A study showed that 65% of the nation believes we are still in a recession. In a class of 20 students what is the probability that all of the class believe we are in the recession? Please show work
From a Christian worldview, what is greed? Is greed just referring to money? What other items could greed be referring to?
At what prices would Google have to close at in order for it to be considered statistically unusual? You should have a low and high value. Be sure to use the definition of unusual from the textbook.
If a person bought 1 share of Google stock within the last year, what is the probability that the stock on that day closed within $45 of the mean for that year? Mean = 521.64, S= 56.29
Kitten lovers bought 12 times as many basic kits than exotic kits last month. Last month, both types of starter kit had total sales of $5,440 (this is the total for both items). How many basic kit
Consider the following probability density function for the random variable X :
An electrical noise voltage is shown to be gaussian with a mean of zero and a variance of 1 volts squared. What is the probability that the measured value of the voltage is greater than 1.5 volts?
The average time to print a job app in the computer is 20 seconds. Calculate the upper bound on the probability of printing a job app in less than 22 seconds.
I also suspect that the effect of average sentence lengths is more pronounced when potential criminals realize that there is a high probability of being caught. Please describe a method for modeling
Let X and Y be independent exponential random variables with means 2 and 3 respectively. Let Z=X+Y. Determine P(2<=Z<=6))
One concern in the evaluation of research results is that the subjects in one treatment condition may be substantially different (older, smarter, and so on) than the subjects in another condition. H
A delegation of 3 is selected from a city council made up of 4 liberals and 5 conservatives. What is the expected number of liberals in the delegation?
Set up a test of the hypothesis that the mean difference between methods is 0. (State the null and alternate hypotheses.) Compute the observed value of the test statistic.
Use the Mann-Whitney Table to find the critical values. For a left -tailed or two-tailed test, you will also
How large of a sample size do we need to estimate the mean annual income of Native Americans in Onondaga County, New York, correct within $1000 with probability 0.99? No information is available to
Which of the following is a valid objective function for a linear programming problem?
If the mean per capita income in the U.S. is $39,000 and the standard deviation is 5000. What percent of the population.
What is the probability of getting the ball into the basket if my Standard Deviation is 1.35 feet and my mean is 0? The width of the basket is 1.5. N=1,000
In a study, the data you collect is status of disease infection. In a study, the data you collect is favorite type of food.