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A distribution has a mean of 110 and a standard deviation of 20 if nothing is known about the shape of distribution, what is the minimum percentage of data between 60 and 160.
Assume that you are conducting a survey of customer satisfaction regarding their cellular phone.
Construct a 95 percent confidence interval for the population proportion of positive drug tests. Why is the normality assumption not a problem, despite the very small value of p?
Two bonus points for rigorously proving Xt and Xt+1 are not independent. Let Xt=1+et-0.5et-1, t=1,2,3,..., where et~IID N(0,2), variance of et is 2. Calculate the mean of Xt.
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
1.in a particular game a ball is randomly chosen from a box that contains 3 red balls 1 green ball and 6 blue balls. if
If an applicant is randomly selected, find the probability of a rating that is between 200 and 275.
find the z values based on a standard normal distribution for an 86 confidence interval for a proportion for a 78
Why is it important to know the standard deviation for a given sample? What do researchers learn about a normal distribution from knowledge of the standard deviation?
At the 5 percent level of significance, does this sample prove a violation of the guideline that the average patient should pay no more than $250 out-of-pocket? State your hypotheses and decision rule.
the heights of people of the same sex and similar ages follow a normal distribution reasonably closely. weights on the
if the mean plasma-aldosterone level in african american children what was them mean230 pmoll with standard deviation
Normal distribution with a mean of 33 oz. and a standard deviation of 0.7 oz. What proportion of packets are underweight (i.e., weigh less than 32 oz.)?
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