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If a couple plans to have 10 children, what is the probability that there will be a least one girl? If the couple eventually has 10 children and they are all boys, what can the couple conclude?
If individual luggage weights are independent, normally distributed rv's, what is the probability that total luggage weight is at most 2500 lb?
Find out the estimate of the population mean.The mean daily sales at the Stop and Go are $20,000 for a sample of 40 days. The standard deviation of the sample is $3,000.
Maximum change in length of BD must not exceed 0.001 times the length of ABC, determine the smallest-diameter rod that can he used for member BD.
A random sample of 64 light bulbs indicates a sample mean life of 350 hours. At the 0.05 level of significance, is there evidence that the mean life is different from 375 hours?
In a large section of statistics class, the points for the final exams are normally distributed with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule.
In the simplest way possible can some one provide me with the steps to find the square root of a number like 11.0554 that is not a perfect square.
Suppose a survey item asks someone if something is very important, somewhat important, not very important, or unimportant. This is an example of what level of measurement?
In a supermarket 20% shoplifters usually get caught, if a random sample of 8 shoplifters is selected. Find the mean and variance of the distribution. What is the probability that 3 will get caught?
Suppose the population standard deviation is 0.3 minutes and the sample mean is 9.975. A 90-percent confidence interval for the true mean delivery time is?
the rejection region of a hypothesis test is fgtf0.0511112.82 and the test statistic is f2.2644 at a level of
Calculate the limits within which the weight of the packets should lie assuming that the machine is not been classified as faulty.
a history professor decides to give a 12-question true-false quiz. she wants to choose the passing grade such that the
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