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A real estate agent wants to estimate the average age of those buying investment property in his area. He randomly selects 15 of his clients who purchased an investment property and obtains the data shown
37, 48, 57, 31, 53, 42, 51, 45, 52, 46, 44, 43, 39, 42, 40
The buyer ages are approximately normally distributed and the sample does not contain any outliers. Construct a 95% confidence interval for the mean age for all the real estateagent's clients who purchased investment property. Lower and upper
What is the minimum length of the bench if you want a 0.975 probability that it will fit the combined hip breadths of 18 randomly selected men?
Refer to Grocery retailer Problem 6.9. Assume that regression model (6.5) for three p1-edictor variables with independent normal error terms is appropriate.
What is meant by the internal validity of an experiment?- How do the two true experimental designs eliminate the problem of selection differences?
1. describe the data that are collected for an independent-measures t test and the hypotheses the test evaluates.2.
A manufacturer of microwaves gathers information on microwave sales from a random sample of 50 stores in a large retail chain. In the sample, the mean number of microwaves sold per store last week was 19, with standard deviation 2.
At a party n men take off their hats. The hats are then mixed up and each man randomly selects one. We say that a match occurs if a man selects his own hat. What is the probability of no matches? What is the probability of exactly k matches?
Assess the relationship between the two variables based on the scatterplot and output for the b coefficient. Is there a relationship between these two variables as hypothesized? Is it a negative or a positive relationship?
because shelf space is a limited resource for a retail store product selection shelf-space allocation and shelf-space
Let D be any deterministic finite automaton. Assume that you know D contains exactly n states and that it accepts at least one string of length n or greater. Show that D must also accept at least one string of length 2n or greater.
Exam: 250713RR-If you assume that s = $0.50, what sample size would the entrepreneur have to take to be 95% confident that the estimate was within $0.25 of the true mean ticket prices?
Calculate the probability that a hand of 13 cards dealt from a normal pack of 52 contains exactly two kings and one ace. what is the probability that it contains exactly one ace given that it contains exactly two kings.
an airliner carries 50 passengers and has doors with a height of 70 inches. heights of men are normally distributed
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