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We are testing the effects of an advertising campaign. We survey 36 people and find that they spent on average $30 more on our product with a sample standard deviation of $45. Our null hypothesis is that they spent the same amount of money on average, and our alternative hypothesis is that they spent more at α=5%.
A) Find the critical value tc
B) Find the test statistic t.
a four year financial project ha net cash flows of 2000025000 30000 50000 in the next four years. it will cost 75000
The formal addition rule expressed the probability of a or b as follows: p(a or b) =p(a)+p(b)-p(a and b). Rewrite the expression for p(a or b) assuming that the addition rule uses the exclusive or instead of the inclusive or (recall that the exclusiv..
What are the advantages of a sufficient statistic? Can you think of a possible disadvantage of sufficiency?
Derive the formula for the entropy of an ideal monoatomic gas using the microcanonical ensemble. This formula is known as the Sackur-Tetrode equation.
If the campus was equally divided between males and females, what are the probabilities of males and females on this campus would be at risk?
Determine the 95 percent confidence interval and the 95 percent prediction interval for the selling price of a home with 2,200 square feet.
Many recent changes have affected the real estate market. A study was undertaken to determine customer satisfaction from real estate deals.
One of the criteria in their evaluation was the baggage capacity of the boat, evaluated using a 4-point rating scale from 1 to 4.
What is the optimal production batch size for Tropical-Granola and What should the average cycle inventory for No Bake-Bar be compared to Tropical-Granola?
Choose a data set from the R package GLMsData. Choose a proper generalised linear model to model the data. Discuss the reason.
Let K be a commutative ring with identity, n a positive integer, and let D be a function which assigns to each matrix A over K a scalar in K. We say that D is n-linear if for each , D is a linear function of the ith row when the other (n-1) rows a..
the annual commissions earned by sales representatives of machine products inc. a manufacturer of light machinery
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