Sampling distribution of the sample proportion
A random sample of n = 400 measurements is drawn from a binomial population with probability of success .21. Give the mean and the standard deviation of the sampling distribution of the sample proportion.
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Assume you have applied for two jobs, A and B. the probablility that you get job a is .13. the probability of being offered job B is .18. the probability of getting atleast one of the jobs is .26.what is the probability that you will be offered bo
In 2010, 91% of households had at least one cell phone. A random sample of 300 households in each of two different counties indicated the following. At the 0.01 level of significance. Can it be concluded that a difference in proportions exists?
The amounts a soft drink machiene is designed to dispense for each drink are normally distributed, with a mean of 12.2 fluid ounces and a standard deviation of 0.3 fluid ounce. A drink is randomly selected.
Determine the smallest integer number of trunk lines needed so that tq the waiting time in the queue satisfies the relation t P[tq < 60 sec.]> 0.95, i.e., the probability exceeds 95% that the time the message spends in the buffer is less tha
An F-curve has df=24,30). In each case, find the F-value that has the specified area to its right. Draw diagrams to illustrate your answers in each case.
A machine is programmed to fill 10-oz. containers with a cleanser. However, the variability inherent in any machine causes the actual amounts of fill to vary. The distribution is normal with a standard deviation of 0.037 oz.
Your personal study has shown that only 68 of the 100 in your sample lasted the 2 years without incurring repair expenses. What is the probability of your sample outcome or less if the actual repair expense-free percentage is 75%?
Engineering of materials, I need you to write a report about Precipitation Hardening of Aluminum Alloys . I will attach the report format which you need to stick with it, and the professor''s manual e
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