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It is found that when a particular 4-sided die is rolled a 1 occurs 26.9% of the time, a 2 occurs 23.8% of the time, a 3 occurs 24.2% of the time, and a 4 occurs 25.1% of the time. Let the random variable X be defined as X = (the number of times that a 2 occurs). If the die is rolled a total of three times: a) Construct a table and histogram for the probability distribution of X. b) Find E(X).
What are the assumptions that must be met for non-parametric statistics? What are the positives and the negatives of the chi-square test?
A technician services machines as companies in the Phoenix area. Depending on the type of malfunction, the service call can take exactly 1, 2, 3, or 4 hours. The different types of malfunctions occur at the same frequency.
The true average gas mileage for this new model, which of the following gives the null and alternative hypotheses that the consumer group should test?
hypothesis testing of single mean.dole pineapple inc. is concerned that the 16-ounce can of sliced pineapple is being
Find the probability of an untrained dog performing as well as Maggie. Is it unusual for an untrained dog to do as well as Maggie?
The sample standard deviation is 10 lbs. We would like to decide if there is enough evidence to establish that the average weight for the population of lawnmowers is greater than 100 lbs.
find the area under the standard normal curve for the followinga pz gt 1.15b p0 lt z lt 1.58c p-1.06 lt z lt
Give a 95% confidence interval for the mean of the population from which the sample is drawn.
The number of cases of merlot wine sold by a Paso Robles winery in an 8-year period follows:
A chocolate bar is considered underweight if it weights less than 8.0 oz. How should the chocolate bar wrappers be labeled so that only 1% of such bars are underweight.
Using Excel, conduct a regression analysis for the following data comparing vehicle weight with fuel efficiency, including:a.?Trendline chart b.?Equation c.?Correlation Coefficient
If you know you need a sample size of 1,063 out of 300,000 to get a 95% confidence level and a 3% confidence interval what steps would you take to get a random sample?
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