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Suppose that 15% of the people in a large city have used a hospital emergency room in the past year. If a random sample of 110 people from the city is taken, approximate the probability that at least 17 used an emergency room in the past year. Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps.
Let F be a field and p(x) and irreducible polynomial over F. Prove that (p(x)) is a prime ideal of F[x]. If R has no divisors of zero, then neither does R[x].
At the time she was hired as a server at the Grumney Family restaurant, Beth Brigden was told, "You can average at least $20 a day in tips." Over the first 35 days she was employed at the restaurant
If the airline sells 160 tickets for a flight that has only 155 seats, what is probability that a seat will be available for every person holding a reservation and planning to fly?
What is the most accurate statement that could be made about the p-value for this test? Construct and interpret the 90% confidence interval for the difference between the population means. Is the hypothesized difference (0.00) within the interval..
two independent observations are selected randomly from a standard normal distribution. the probability that their
Suppose that a failure of certain component follows the distribution f(x) = px(1 - p)x for x = 0, 1, and zero, elsewhere. How many components must one test in order that the sample mean X will lie within 0.4 of the true state of nature with probabili..
suppose that the probability is .3 that any given citrus tree will show measurable damage when the temperature falls to
There are three flight phases. At α = 0.05, is the cockpit noise level independent of flight phase?
when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is a
Descriptive stats for each numeric variable, Histogram for each numeric variable and Bar chart for each attribute (non numeric) variable
Douglas Boats is considering the possibility of expanding the warehouse for the WM-4 motors. How much should Douglas Boats expand, and how much would it be worth for the company to make the expansion? Assume demand is constant throughout the year.
a recent survey indicated that the average yearly salary of middle school teachers in wichita kansas is 45000 with a
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