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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.
what are the values of the 1 test statistic 2-3 critical values and the 4 smallest level of significance at which the
A book publisher wants to know if there is a relationship between gender and book-type preferences in recreational readers. Recreational readers in a simple random sample were asked if they prefer reading mysteries, romance novels, or self-help bo..
(A) Which test is the most appropriate to analyze these data, and why is that test most appropriate? (B) What are an appropriate null and alternative hypothesis for this statistical test?
At a car rental agency, 0.34 of the cars are returned on time. A sample of 11 car rentals is studied. What is the probability that more than 3 of them are retur
discuss the implications of magnitude from 0 to 1 sign or - and probability versus causality for the correlation
find the z value based on standard normal distribution for each of the following 88 confidence interval for a
a survey is being planned to determine the mean amount of time corporation executives watch television. a pilot survey
Compare and contrast Taguchi's loss functions for the situations target is best, smaller is better, and larger is better. Give examples in the hospitality industry.
Suppose your analysis produced F 2.56 with 5, 75 df. How many treatment groups are in your experiment? What are the critical values for the .05 and .01 levels? What conclusion should you reach?
the statistical procedure ensures that the alpha level for any given planned contrast will not exceed .05
A sample of 49 repairs showed an average overhaul of 285 hours with a standard deviation of 50 hours. Calculate a 95% confidence interval for the average overhaul.
Determine the sample size necessary to estimate a population proportion to within .03 with 90% confidence assuming you have no knowledge of the approximate value of the sample proportion.
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