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Fancorp (a consulting firm) claims that "less than half of franchises are owned by husband-wife team." A simple random sample of 37 franchise owners shows that 12 are owned by husband-wife team. Can you confirm Fancorp's claim at α = 0.05? (Use p-value approach)
[Note: the hypothesis one wants to reject is usually the null hypothesis and the hypothesis one wants to conclude is usually the alternative hypothesis.]
Consider a constraint that represents the use of an essential nutritional resource in an LP. There are 3 variables-- X, Y, and Z. The resource constraint is a nutritional requirement for iron in a diet. It states that each unit of each variable..
If the company's report is correct, what is the probability that the average balance of an account in the sample is $383 or less?
suppose that x and y are independent exponential random variables each with rate lambda. what is the conditional
The correlation coefficient was .56 (and statistically significant). Does given finding provide support for the idea that playing violent video games increases aggression? Explain your answer.
(a) Test the hypothesis that H0 : μ = 44 vs. Ha : μ /= 44 using α = 0.10. Draw a box plot and normal plot for this data, and comment. (b) Find a 90% con?dence interval for the population mean μ. (c) Discuss the meanings of (a) a..
Each team member will be expected to examine exports sent from different regions (Pacific, Mountain, New England, etc.) in the U.S., in terms of total volume for a specific year. For example: Bob, Harry, and Frank are on a team. They are assig..
The annual commissions per salesperson employed by a retailer of mobile communication devices averaged $40,000, with a standard deviation of $5,000. What percent of the salespersons earn between $32,000 and $42,000?
Find the line of best fit and graph it on the scatterplot. State the equation of the line - State the slope of the line of best fit. Carefully interpret the meaning of the slope in a sentence or two
Assume a sample of 400 American adults were taken. Show the sampling distribution of the proportion of adults who balance their checkbook at least once a month.
A stationery store wants to estimate the mean retail value of greeting cards that it has in its inventory. A random sample of 100 greeting cards indicates a mean value of $2.55 and a standard deviation of $0.44.
The production manager at Bellevue Steel, a manufacturer of wheelchairs, wants to perform a second analysis of the number of defective wheelchairs produced on the day shift and afternoon shift.
a. Interpret the slope coefficient, b1.b. Explain why the intercept term (b0) does not have a meaningful interpretation.
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