The following table shows the selling prices, in thousands of dollars, and the square footages of seven randomly selected houses recently sold by Century 21 Realtors.
Determine the sample correlation coefficient between a house’s selling price and its square footage.
Answer to relevant QuestionsUsing α = 0.10 and the data from Problem 14.11, test the significance of the population correlation coefficient between a house’s selling price and its square footage. What conclusions can you draw? In Problem The following table shows the hot dogs bought from a street vendor over the course of eight days (“Demand”). Also shown is the temperature for each day in degrees Celsius. a. Calculate the slope and y intercept for the ...Using the data in Problem 14.22, construct a 95% prediction interval for x = 5. In Problem Use the data in Problem 14.30 to construct a 90% prediction interval to estimate the cost in February to heat a Northeast home that is 2,400 square feet. Verify your results using PHStat. In Problem Perform a hypothesis test with the data from Problem 14.3 to determine if the population correlation coefficient is less than zero using α = 0.05. What are your conclusions? In Problem
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