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Question: Cold weather. A meteorologist preparing a talk about global warming compiled a list of weekly low temperatures (in degrees Fahrenheit) he observed at his southern Florida home last year. The coldest temperature for any week was 36°F but he inadvertently recorded the Celsius value of 2°. Assuming that he correctly listed all the other temperatures, explain how this error will affect these summary statistics:
a) measures of center: mean and median.
b) measures of spread: range, IQR, and standard deviation.
Could purposive sampling help determine the extent to which people might use the glue improperly? If so, describe the composition of at least one purposive sample that could be employed for this purpose.
Develop a linear regression model for these data and forecast carpet sales if 30 construction permits for new homes are filed.
give the coefficient of xk in the expansion of x 1x99 where k is an integer between 0 and 99 inclusive. give
find the indicated probabilities using the geometric distribution or the poisson distribution. then determine if the
Assume that random variables X1,.....,X50 are independent and all have probability density function fX(x) = 1/x for 1
What is your reaction to the radio station's claim after seeing the sample evidence? Use α=.05 in making the statistical test. What is the p-value?
Suppose a person within the last year claimed to have bought Google stock at closing at $362.50 per share. What is the probability that the stock closed at $362.50 or less on a randomly selected business day
You want to determine whether or not an observational coding system you've created for ADHD is better as a system with 5 behavioral scales or 3 behavioral scales. What test should be run?
Gold's managers are considering a promotion in which they reward frequent users with a small gift. They have decided that they will only give gifts.
The article "On Assessing the Accuracy of Offshore Wind Turbine ReliabilityBased Design Loads from the Environmental Contour Method" (Intl. J. of Offshore and Polar Engr., 2005: 132-140) proposes the Weibull distribution with α = 1.817 and ß = .8..
Amenities. A check of dorm rooms on a large college campus revealed that 38% had refrigerators, 52% had TVs, and 21% had both a TV and a refrigerator.
What is the difference between calculating a confidence interval on the mean vs calculating the confidence interval on a proportion?
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