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A local school board proposed that the annual budget include the installation of air conditioning in the culinary arts wing of their high school. To support their proposal, they collected data and determined the following regression line for the given data, y = 0.449x - 30.27. Determine the residual of a data point for which x = 75 and y = 4.
Temperature, x 72 85 91 90 88 98 75 100 80
Number of absences, y 3 7 10 10 8 15 4 15 5
A research study comparing college alcohol use in the United States and Canada reports that more Canadian students drink but American students drink more Is this study an example of an experiment? Explain why or why not.
(a) Use the ANOVA approach to test the appropriate hypotheses. Use α = 0.05. (b) Test the appropriate hypothesis by using the two-sample t-test for comparing population means. Compare the value of the t-statistic to the value of the F -statistic calc..
They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100.
A deck of cards contains 52 cards, of which 4 are aces. You are offered the following wager: Draw one card at random from the deck.
You take half of the American population every night and set them down in front of a screen watching people getting stabbed, shot and blown away.
What is the probability that the individual is a male - are enjoying shopping for clothing and the gender of the individual statistically independent? Explain.
a way to make screening tests more economical is to pool samples. suppose that we would like to screen for a rare blood
write the Data Analysis section of the methods and the Results for an experiment, as if for publication in a journal. The experiment and results are completely fabricated and the purpose of the assignment is to demonstrate your ability to analyse ..
It is known from previous studies that the population variances are 8.1 and 7.3 respectively. Using a level of significance of .01, is there evidence that the out of state students may be receiving lower grades? Fully explain your answer.
A surgical technique is performed on seven patients. You are told there is a 70% chance of success. Find the probability that the surgery is successful for at least four patients.
Why is it unlikely that copyright protection would usually lead to significant market power?
A local church parish wants to raise money to add to their campus. In a sample from a previous fund raising campaign, the parish found that of the 137 people
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