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Question: Outliers. The African elephant is much larger than any other mammal in the data set but lies roughly in the overall straight-line pattern. Dolphins, humans, and hippos lie outside the overall pattern. The correlation between body weight and brain weight for the entire data set is r = 0.86.
(a) If we removed the elephant, would this correlation increase or decrease or not change much? Explain your answer.
(b) If we removed dolphins, hippos, and humans, would this correlation increase or decrease or not change much? Explain your answer.
An investigator analyzed the leading digits of the amounts from 200 checks issued by three suspect companies. Calculate the χ2 test statistic. Calculate the χ2critical value
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
The supplier claims that no more than 2% of the items in the shipment are defective. Carry out an appropriate hypothesis test and comment on the credibility of the supplier's claim.
Construct a 99% Confidence Interval for the value of the mean hours total MSU students spend in the library in a week. Demonstrate your calculations and graph
Write a short essay (up to 500 words) addressing some of the Puritan beliefs revealed by the works we have covered that led to tensions, conflicts, and concerns among the colonists and/or the Native Americans.
Explain how much should the airport authority be willing to pay for perfect information about the success of a brand new airport.
give an example of how anova may be useful for your area of research. state a null and alternative hypothesis and
Art and government.Throughout history we see great art as a benchmark of great civilizations.
A new process for producing synthetic diamonds can be operated at a profitable level only if the average weight of the diamonds produced by the process is greater than 0.5 karat.
According to a national survey of 1,500 Silverman Sachs customers, 1,050 of them were either satisfied or very satisfied with their financial advisor.
Assume normality, and conduct the appropriate hypothesis test to determine whether the additive lowers the mean cloud point in biodiesel fuel. Use a = 0.05.
The Mumbai Cricket Club, a professional club for the cricketers
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