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To test the difference in two proportions.
A test was conducted to find out whether gender of a spokesperson affected the likelihood that consumers would prefer a new product. A survey of consumers at trade show employing a female spokesperson determined that 70 out of 150 customers preferred the product while 62 of 180 customers preferred the product when a male spokesperson was employed. At the 0.01level of significance do the samples provide sufficient evidence to indicate that on the average more consumers prefer a new product when the spokesperson is female?
Use empirical Rule to evaluate proportion of costs within 2 standards deviations of mean. Write down these limits.
Determine mean of distribution shown. Give the mean of following probability distribution?
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Four wheel bearings have been replaced on a company car. The mechanic has selected 4 bearings from a large supply bin. The mechanic is unaware that 10 percent of the bearings fail within the first 100 miles.
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
In a normal frequency distribution, 32% of the cases:
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
Some of the factors affect statistical power for a one sample t test. How does statistical power change (increase or decrease) for each of the following changes?
Based on information, compute the following: Percentage (or portion) of children who watch television less than 6.5 hours a week.
What is the proportion of people surveyed that rated the subway system from 3 to 4. What is the proportion of people surveyed rated the Subway System from 1 to 3.
Show the graph of the probability density function for flight time.
LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.
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