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An environmental conservation agency recently claimed that more than 30% of Canadian consumers have stopped buying a certain product because the manufacturing of the product pollutes the environment. You want to test this claim. To do so, you randomly select 980 Canadian consumers and find that 314 have stopped buying this product because of pollution concerns.
explain
i) null and alternative hypotheses
ii) statement of assumptions
iii) calculation of the test statistic
iv) calculation of the P-value
For the telephone switch of Example 10.28, we can estimate the expected number of calls in the system, E[M(t)], after T minutes using the time average estimate
Identify one cyberattack that occurred in the last 2 years. What caused the cyberattack? Do not repeat an example that has been posted previously.
What is the probability of flipping a coin 6 times and getting 4 or more heads?
Job discrimination? A company with a large sales staff announces openings for three positions as regional managers.
Would it be unusual if atleast one of five randomly selected diamonds is gem quality? Explain.
a) Use a 0.10 level of significance to test the hypothesis that the mean wealth is less than $500,000.
Beanstalks. Beanstalk Clubs are social clubs for very tall people. To join, a man must be over 6'2" tall, and a woman over 5'10" The National Health Survey.
The purpose of this example is not to negate the serious and unexpected outcomes related to heart disease, which hormones were thought to protect against.
if the alpha level is increased from a .01 to a .05 what happens to the size of the critical region.a. it
1. Consider a point on the Trans-Australian Highway, where two old wombats live. Arrivals of cars at this point follow a Poisson distribution; the average rate of arrivals is 1 car per 12 seconds.
determine the selling price pv per 1000 maturity value of the bond. hint assume twice-yearly interest payments. round
The mean television viewing time for teens is 3 hours per day. Assume the population mean is 3 and the population standard deviation is known to be 1.2 hours.
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