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Historically 25% of all students taking an statistics course have failed (i.e. receive a grade below C). Professor Han thinks that she has a better method of teacher statistics to business students. She is given a random sample of 40 business student to teach last Spring. The students are given the traditional exam. Only 3 of the students fail to obtain a C or better.
a). Is this evidence at 1% level that Professor Han's method produces less than 25% grades less than a C?
b). What is the p-value for your test?
what is the standardized score of a mean of 230 taken from a sample of 25 from a normal population that has a mean of
A high-performance jet airplane is shown in Figure DP10.7 (a), and the roll-angle control system is shown in Figure DP10.7 (b). Design a controller Gc(s) so that the step response is well behaved and the steady-state error is zero.
We monitor the number of incoming calls into a doctor's office. Let X be the number of incoming calls between the hours of l pm and 2 pm and Y be the number of calls between l pm and 3 pm.
the tables below summarize the surgery survival rate for two hospitals grouped according to patient condition prior to
a supply a suitable definition of a non-homogenous compund poisson process xt t in 0 infinity b does xt have
Find the probability that a customer with 2 or more late payments will actually default on his payments and, in light of this probability, criticize the manager's credit plan.
Effective Yield Repeat question 9, but this time assume that Rollins, Inc., expects the 180-day forward rate of the pound to substantially overestimate the spot rate to be realized in 180 days.
If a random sample of 64 test scores is selected, what is the standard deviation of the sample mean? What is the probability that 64 randomly selected test scores will have a mean test score that is between 475 and 525?
a population is normal with a variance of 17. suppose you wish to estimate the population mean u. find the sample size
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
Consider a box game with 2 boxes. Box 1 has one drawer, and Box 2 has 5 drawers. A player will select a box at random and then pick a drawer from that box at random. You have two prizes to place in the drawers. Where should you place them to creat..
assume that iq scores are normally distributed with a standard deviation of 15 points and a mean of 100 points. if 100
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