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Suppose that network breakdowns occur randomly and independently of each other on an average rate of three per month.
(a) What is the probability that there will be just one network breakdown during December? Interpret.
(b) What is the probability that there will be at least four network breakdowns during December? Interpret.
(c) What is the probability that there will be at most seven network breakdowns during December? Interpret.
Paul has calculated the indifference probability for the lottery having a payoff of $160K with probability p and -$80K with probability (1-p) as follows:
the weight of coffee in a can is normally distributed with a mean of 16.1 oz and standard deviation of 0.5 oz.a
Calculate the among groups degrees of freedom, determine if the mean ratios for the four neighborhoods are the same?
Heights were measured for a random sample of 20 plants grown while being treated with a particular nutrient. The sample mean and sample standard deviation of those height measurements were 39 centimeters and 12 centimeters, respectively.
Assuming that a difference (Δ) of 2 lbs. in the mean was important to detect, a maximum Type I Error (α) level of 5%, and the desire to run a two-tailed test, then:
To utilize the weighted least squares approach we need to know, up to a multiplicative constant, the variance of Y as a function of x. We will now present an argument that Var(Y) should be proportional to x.
there are a lot of symbols so i am sorry if this is hard to read.qtheta hat qthetasuppose eq1eq2q. vq1sigma12
waiters at finegolds restaurant and lounge earn most of their income from tips. each waiter is required to tip-out a
1. rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.2.
The article claims that the distributions of annual returns for both common stocks and long-term government bonds are bell-shaped and approximately symmetric. Assume that these distributions are distributed as normal random variables with the mea..
the following statistics were found using the 23 gas prices submitted for the project.n 23macrx 3.25s 0.11in this
A standard deck of 52 cards is shuffled thoroughly and n cards are turned up. What is the probability that a face card turns up? For what value of n is the probability about .5?
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