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1. Let Y have a chi-square distribution with 7 degrees of freedom. Find the following probabilities.
(a) P (Y > y0) = 0.025
(b) P (a <>Y < b)="">= 0.90
(c) P (Y > 1.239).
2. The time to failure T of a microwave oven has an exponential distribution with pdf 1 f(t) = 2 e- t/2, t > 0.
If three such microwave ovens are chosen and t is the mean of their failure times, ?nd the following:
(a) Distribution of T .
(b) P (T > 2).
Canada has several small biotechnology companies which are research intensive and develop chemical compounds that may prove to be useful drugs, but they typically do not have the funding or global reach to test the compounds for government approva..
guy thinks that nba players in general are taller than high school basketball players. he has measured 5 nba players
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Botanist is testing three plants and finds that prob of plant A being alive in a weak is 0.3 plant B is 0.6 and plant C 0.5 these probability are indipendant of each other. Determine the probability of all plants being alive after a weak.
Find the standard normal area for each of the following: (Round the answers to 4 decimal places.)
A researcher is interested in studying the relationship between certain driving habits and type of vehicle. He hypothesizes that signaling behavior will be different for drivers of trucks and cars.
When 40 people used the Weight Watchers diet for one year, their weight losses had a standard deviation of 4.9 lb (based on data from "Comparision of the Atkins, Ornish, Weight Watchers, abd Zone Diets for Weight Loss and Heart Disease Reduction, ..
complete the following hypothesis test ho ? 52 ha ? lt 52 ? 0.01 using the data below.55 47 58 55 39
In a group of six professors selected at random, what is the expected number of extroverts? What is the standard deviation of the distribution?
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question in a discrete mathematics class every student is a major in computer science or mathematics or both. the
A company uses the formula C(x) = 0.02x^2 - 3.4x + 150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars is the unit cost at its minimum?
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