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Suppose a life insurance company insures the lives of 1,000 men aged 30. If actuarial studies show that the probability that any 30-year old man will die in a given year to be 0.003, find the probability that the company will have to pay x=1 claims during a given year.
the wind mountain archaeological site is located in soutwestern new mexico. wind mountain was home to a culture of
the random variable x is normally distributed as xnmicro?2. it is known that px?660.03359 and px?810.1151a. give a
assume you are in charge of a production line which allows for no more than 1 defectives in order to be in compliance.
A random sample of n=9 men between 30-39 years old is asked to do as many sit ups as they can in one minute. The mean number is x=26.2 and the standard deviation is s=6. Find a 95% confidence interval for the population mean.
Dr. Easy saw the scores from the MA-222 test and used the occasion to test the old adage that girls are smarter than boys on subjects tested by ACT.
A manager of a large department store with three floors reports that the time a customer on the second floor must wait for an elevator has a uniform distribution ranging from 0 to 16 minutes. It takes the elevator 1 minute to go from floor to floo..
The researcher expects a 12-point treatment effect and plans to use a two-tailed hypothesis test with a = 0.05.
the mean diastolic blood pressure among american men aged 18-44 is known to be 81 mmhg. a random sample 150 canadian
A particular candidate claims she has the support of at least 60% of the voters in her district. A random sample of 150 voters yields 87 who support her.
Q. An owner of a chain of stores would like to predict weekly sales based on the number of customers who made a purchase. A random sample of 10 stores were selected. The weekly sales are in thousands of dollars.
A machine cuts circular filters from large rolls of material. If 7.3% of the filters fail to meet specifications, use the normal approximation to the binomial to compute the probability that a sample of 100 of the filters will contain 5 or fewer that..
The population variances are 4.6 and 5.0 respectively. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades?
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