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According to a survey of 25,000 ?households, 46% of the people watching a special event on TV enjoyed the commercials more than the event itself. Complete parts a through e below based on a random sample of nine people who watched the special event.
a. What is the probability that exactly three people enjoyed the commercials more than the? event?
The probability is
b. What is the probability that less than four people enjoyed the commercials more than the? event?
the number of ratios in each household in a country. is this a population or sample?the ages of three families of
Find the value of Z-score- standard normal distribution.Find out a value of the standard normal random variable z, call it z0.
An independent financial advisor claims an average rate of return, μ, on a particular investment is at least 7%. In testing her claim, the correct pair of hypotheses is:
a new design for the braking system on a certain type of car has been proposed. for the current system the true average
A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course.
Usually we study the history of states with fixed borders, but people who are part of one state sometimes move to another state (or another part of an empire) for education or work. For East Asia from 1900 to 1945, identify three groups of people..
Translate the following arguments into symbolic notation.- Either drivers are forbidden to send text messages, or the highways will not become safer.
Use a computer random number generator or invent your own random mechanism to draw six numbers. Explain your process, and write down the six numbers chosen.
Which are likely to be independent events? For those you think are not, suggest reasons why.
What is the probability that the sample mean will be within +/- 6 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decim
You catch 12 brown trout. A fish psychologist determines the I.Q.s as follows: 5; 4; 7; 3; 6; 4; 5; 3; 6; 3; 8; 5. Conduct a hypothesis test of your belief.
(A.) Is the experiment a binomial? experiment? (B.) What is a success in this? experiment?
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