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A particular department store knows from past experience that 35% of their customers have the store's credit card. What is the probability that out of the next 13 customers that exactly 6 have the store's credit card? (please express your answer using 4 decimal places)
During a meeting, one hospital administrator indicated that 70% of the geriatric patients are males. What is the sample proportion of male patients?
an urn contains nine white balls and 11 black balls. a ball is drawn and replaced. if the ball is white your opponent
Which of following statements would be right concerning a twotail test at 0.05 level of significance? We can conclude that average cottage cheese consumption in America is at least 0.705 pound more or less than 2.75 pounds per person per year.
Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:
1 the population proportion is .30. what is the probability that a sample proportion will be within plusmn.04 of
If in a random poll of 250 residents, 150 residents were in favor, how accurate is this result as an estimate of the proportion?
Use your calculator to find the mean and standard deviation for the 9 observations that remain when you leave out the outlier. How does the outlier affect the values of x and s? Is s a resistant measure of spread?
you roll two fair dice a green one and a red one.a what is the probability of getting a sum of 6? enter your answer as
from the data bank select a random sample of 30 individuals. a. use the z test to test the hypothesis for iq that h0
Employees what is the mean and standard deviation for the expected number of employees making more than $70,000 per year #question.
Of those not having lung disease, 25.3% are smokers. Determine the probability that a randomly selected smoker has lung disease.
the makers of a soft drink want to identify the average age of its consumers. a sample of 55 consumers was taken. the
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