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Q1) Assume you want to state that less than 0.5% (0.005) of your cables is defective.
a) How many observations should you take so that you can make use of normal approximation?
b) Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer from a.
c) By using normal approximation, compute test statistic and rejection criteria (by hand/calculator).
d) By using your answers to b, create a hypothesis test to find out if probability is equal to 0.005 or greater than 0.005. Provided that you know actual event probability.
A study sponsored by American Express Co. and the French government tourist office found that old American stereotypes about French unfriendliness weren't true.
The world record time (in minutes) in the marathon is plotted versus the year in which the record was set for men and women separately. The plotting symbol o is used for men and x for women. The data include only records set between 1908 and 1988.
A frequency polygon: does not depend on one variable. True-False
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
The researchers planned to use simple linear regression to see if the age at which a baby was first able to crawl could be predicted from the average outdoor temperature six months after each baby's birthdate.
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
If the basket ball player is a 74% free throw shooter, then, on average, how many free throws will he or she make in a game with eight free throw attempts?
Two types of flares are tested for their burning times (in minutes) and sample results are given below.
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
A sample of 50 male and 50 female infants were put on an experimental infant formula. After two weeks the parents of each infant were asked to fill out a questionnaire concerning infant satisfaction on the formula. One of the questions was "Did Ba..
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
Suppose you found that in doing the hypothesis test, you were able to reject the null hypothesis. What is the most appropriate conclusion to draw?
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