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In a recent study of Vietnam veterans, researchers found that in a sample of 2101 veterans, 777 had been divorced at least once. Assuming that these veterans were a simple random sample from the population of all Vietnam veterans, find a 90% confidence interval for the proportion of the population who have been divorced at least once. Write a confidence statement.
the daily milk production of cows is normally distributed with a mean of about 35 kgday and a standard deviation of 7
A standard deviation of mg/dL. What is Mrs. Brown's cholesterol level? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
1.i have computed an analysis of variance for three groups with 10 observations per group. the degrees of freedom for
gallop a national polling organization surveyed 1018 randomly selectd american adults about their level of education
question a population has a standard deviation of 50. a random sample of 100 items from this population is selected.
Faced with rising fax costs, a firm issued a guideline that transmissions of ten pages or more should be sent by two-day mail instead. Exceptions are allowed, but they want the average to be ten or below. Use Excel to find the right-tail p value
Past experience at the Crowder Travel Agency indicated that 44% of those persons who wanted the agency to plan a vacation for them wanted to go to Europe.
assume that iq scores are normally distributed with a standard deviation of 11 points and a mean of 100 points. if 140
an article contained the following observations on degree of polymerization for paper specimens for which viscosity
Given that the test has a mean of 1000 and a standard deviation of 200 what is the lowest possible score needed for acceptance?
a researcher performs a hypothesis test at the 0.05 level of significance. the null hypothesis is p 0.85and the
What is the probability that the number of granite selected for analysis is within 1 standard deviation of it means value.
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