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Title: Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally ... Post by: lizfloyd1 on Mar 3, 2018 Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally distributed with an average speed = 65 mph and standard deviation = 5 mph. What is the standard deviation for the sample mean speed in a random sample of n = 100 cars?
Q. 2 Explain what is meant by the power of a hypothesis test and suggest one way a researcher might change their study design to increase the power of the test. Q. 3 Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally distributed with an average speed = 65 mph and standard deviation = 5 mph. What is the expected value of the sample mean speed in a random sample of n = 100 cars? Q. 4 Explain what the statement of the alternative hypothesis represents in hypothesis testing. Give an example. Q. 5 Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally distributed with an average speed = 65 mph and standard deviation = 5 mph. What is the probability that the sample mean speed in a random sample of n = 10 cars exceeds 68 mph? Q. 6 Explain what the statement of the null hypothesis represents in hypothesis testing. Give an example. Q. 7 Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally distributed with an average speed = 65 mph and standard deviation = 5 mph. What is the standard deviation for the sample mean speed in a random sample of n = 10 cars? Q. 8 In an American criminal trial, the null hypothesis is that the defendant is innocent and the alternative hypothesis is that the defendant is guilty. Which of the following describes a Type 2 error for a criminal trial? a. A guilty verdict for a person who is innocent. b. A guilty verdict for a person who is not innocent. c. A not guilty verdict for a person who is guilty d. A not guilty verdict for a person who is innocent Title: Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally ... Post by: hhenderson96 on Mar 3, 2018 Content hidden
Title: Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally ... Post by: lizfloyd1 on Mar 3, 2018 Good timing, thanks!
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