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There are six members on a board of directors. If they must elect a chair, person, a secretary, and a treasurer, how many different slate of candidates are possible
Assume that the density of states is the same in the conduction band (C8) and m the valence band ( V8). Then, the probability that a state is filled at the conduction band edge (Ee) is equal to the probability that a state 1s empty in the valence..
Using a two-tailed test at a 0.05 level of significance, state the decision to retain or reject the null hypothesis.
If the computed value of F is 5.01 and the critical value is 2.67, we would conclude that all the population means are equal. Unlike student’s t distribution, there is only one F distribution.
Determine a confidence interval around a sample statistic that will give us a range of error when comparing the sample statistic to the population statistic.
Let X1, ... , Xn be i.i.d. r.v.'s with (?nite) unknown mean m and (?nite) known variance s 2, and suppose that n is large.
Should they be higher given the reduced cash coverage of outstanding debt?
the amounts of soft drink machine is designed to dispense for each drink are normally distributed with a mean of 11.7
A palette has 200 milk cartons. Of the 200 cartons, it is known that ten of them have leaked and cannot be sold.
Using the central limit theorem, determine the probability that the total time required to serve a random sample of 16 customers will exceed 1 hour.
Suppose that we doubt this claim and we carry out a hypothesis test to see if we can refute the claim. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test.
The population mean for all 123 women was 64.6 inches. Is this evidence that the sampling procedure was biased? Explain.
If X overbar=68?, S=13?, and n=81?, and assuming that the population is normally? distributed, construct a 95 % confidence interval estimate of the population?
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