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Bernoulli, part 2. Can we use probability models based on Bernoulli trials to investigate the following situations? Explain.
a) You are rolling 5 dice. How likely is it to get at least two 6's to win the game?
b) You survey 500 potential customers to determine their color preference.
c) A manufacturer recalls a doll because about 3% have buttons that are not properly attached. Customers return 37 of these dolls to the local toy store. How likely are they to find any buttons not properly attached?
d) A city council of 11 Republicans and 8 Democrats picks a committee of 4 at random. How likely are they to choose all Democrats?
e) An executive reads that 74% of employees in his industry are dissatisfied with their jobs. How many dissatisfied employees can he expect to find among the 481 employees in his company?
Use a 0.05 significance level to test the claim that the sensory measurements are lower after hypnotism. Does hypnotism appear to be effective in reducing pain?
the college physical education department offered an advanced first aid course last quarter. the scores on the final
Describe a situation that might be viewed differently by two people. This event can be as minor as an encounter on the street or as major as the birth of a child.
A die is rolled 60 times. An "ace" is the side with one dot. Use the normal approximation to estiate the chance of getting exactly 12 aces.
discuss the following statements and explain why they are true or falsea increasing the number of predictor variables
On the other hand, if the market is unfavorable. ken will suffer a loss of $200.000. But ken has always been a very optimistic decision maker.
what is the numeric value of k if the pmf is given as px k2 for x
Use the steps of hypothesis testing. (b) Sketch the distributions involved. (c) Explain your answer to someone who has never taken a course in statistics.
Iif two voters are randomly selected for a telephone survey, what is the probability that they are both Republicans? Round your answer to 4 decimal places.
Construct a 95 percent confidence interval for the population proportion of positive drug tests. Why is the normality assumption not a problem, despite the very small value of p?
suppose duration of human pregnancies are somewhat skewed with mean 263 days and standard deviation of 19 days.
At 0.01 significance level can we conclude that mean fare has increased? Determine the p-value?
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