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1. The state of Maryland has license plates with three numbers followed by three letters. How many different license plates are possible?
2. There are four people being considered for the position of chief executive officer of Dalton Enterprises. Three of the applicants are over 60 years of age. Two are female, of which only one is over 60.
a. What is the probability that a candidate is over 60 and female?
b. Given that the candidate is male, what is the probability he is less than 60?
c. Given that the person is over 60, what is the probability the person is female?
the lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days.a. find
It is better to use the median rather than the mean for a distribution when:
a sample of 36 patients in a doctors office showed that they had to wait an average of 45 minutes with a standard
Use PHStat to make a box-whisker plot. If PHSTAT has yet to be installed, calculate Xmin, Xmax, Q 1 , Q 3 and median using equation in Class Notes-Quartiles, Percentile & Dectiles.
Use RNG in Excel to generate n = 5 observations from the Normal distribution N(20, 5). Test H0: μ = 20 versus H0: μ ≠ 20 at the α = 0.05 level of significance. Repeat this process 100 times and then count the number of times that you reject H0.
samples of the members of five different labor unions were asked whether they are for or against a certain piece of
Find the 90% confidence interval for the variance and standard deviation if a sample of 15 has a standard deviation of 2.3. Assume the variable is normally distributed.
If F(x, y) is the value of the joint distribution function of the two continuous random variables X and Y a (x, y),
question in this problem we will perform regression analysis on the sepal and petal measurements of the first 50
AVX Stereo Equipment, Inc recently began a "no hassles" return policy. A sample of 500 customers who had recently returned items showed 400 thought the policy was fair, 32 thought it took too long to complete the transaction, and the rest had no o..
suppose a manufacturing company makes a certain item. the time to produce each item is normally distributed around a
What must be checked in order to compare two population means when you do not know the values of the population standard deviation? Which one?
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