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A certain airplane has two alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is.02. What is the probability that(a)both will fail? (b) neither will fail. (c) one or other will fail. Show steps. Do not understand the concept of figuring out the solution for probability problems.
P(A 1 )= .20, P(A 2 ), and P(A 3 )= .40. P(B 1 I A 1 ) = .25. P(B 1 I A 2 ) = .05. P(B 1 I A 3 )=.10. Use Bayes' theorem to determine P(A 3 I B 1 )
Set up a null and alternative hypothesis to test whether this sample is falling below expectations.
If the server has 40 customers in one shift, what is the probability that her total tips are less than $250? (Assume that these 40 customers represent a simple random sample).
The mean, median, and mode are the most common measures of dispersion (spread).
Assume that 5,000 sales invoices are separated into four strata. Stratum 1 contains 50 invoices, stratum 2 contains 500 invoices, stratum 3 contains 1,000 invoices, and stratum 4 contains 3,450 invoices.
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
What does analysis of variance mean? One of the students answers this question as follows:
Identify the independent and dependent variables, and Construct a nominal, ordinal, and interval level measure for each independent and dependent variable.
Would it be reasonable to conclude that the population mean is 63 pounds?
If random samples of size of 75 is selected, the standard error of the proportions of student in the sample, who are minority students is
Determine x-bar and s for this data set. You may suppose the values for bulb life are normally distributed. Use traditional method to make your decision.
In the past few years out sourcing over seas has become more frequently used than before by U.S. companies. However, out souring is not with out problems. A recent survey indicates that 20% of the companies that outsource over seas use consultant.
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