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1. Assume the weights of women between 16 and 30 years of age are normally distributed with a mean of 120 pounds and a standard deviation of 18 pounds. If 100 women are selected at random from this population, how many would you expect to have the following weights (round off to the nearest integer):
a. Between 90 and 145 poundsb. Less than 85 poundsc. More than 150 poundsd. Between 84 and 156 pounds 2. Suppose that the population of 25-year-old American males has an average remaining life expectancy of 50 years with a standard deviation of 5 years and that life expectancy is normally distributed.
a. What proportion of these 25-year-old males will live past 75?b. What proportion of these 25-year-old males will live past 85?c. What proportion of these 25-year-old males will live past 90?d. What proportion will not live past 65?
Write the balanced chemical equation for the reaction between Na2SO4(aq) and CaCl2(aq). Explain the use of a solution of Ba(NO3)2(aq) to test the filtrate.
A medical test for malaria is subject to some error. Given a person who has malaria, the probability that the test will fail to reveal the malaria is 0.06. Given a person who does not have malaria, the test will correctly identify that the person ..
Let X equal the number of "ones" if a fair dice is tossed two independent times by someone out in the hall. If X=x that person gives the player a bowl consisting of 10-3x red chips and 3x white chips.
find the number of units that produces a maximum revenue. the revenue r is measured in dollars and x is the number of
A local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital. a) Provide a 95% confidence level for all the patients who are referred to the health center by the hospital.
consider the experiments first draw a poisson random variable n with parameter ?. then perform n independent bernoulli
How many bags of each type should be produced and what is the maximal profit? Which constraints arebinding?
a tibetan monk leaves the monastery at 700 a.m. and takes his usual path to the top of the mountain arriving at 700
Write the null and alternative hypotheses you would use to test the following situation.
Historical data suggests a standard deviation in the first sample of 10 and a standard deviation in the second sample of 16. Find a 95% confidence interval for the population difference.
in the new dunn zone at waldo stadium the university has decided to run a promotion to increase student attendance. for
Use the correct formula to find the probability that, out of 45 houses, exactly 4 of the houses will be burglarized. Show your calculations or explain how you found the probability.
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