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Heights of males are normally distributed with a mean of 165 cm and a standard deviation of 10 cm.
What is the probability that the sample mean height of males is greater than 170 cm for a random sample of 25 males? Show workings in your answer.
Without doing the calculations, would the probability that one randomly selected male is taller than 170 cm be smaller, larger or the same as the probability you found in part A)? Briefly explain your answer.
Expand upon and paraphrase the following, definitely describe each of the variables - For each variable answer the question is it categorical or numerical?
consider a dial having a pointer that is equally likely to point to each of n region numbered 12...n. when we spin the
Most of the following selections were taken from letters-to-the-editors columns of newspapers and magazines. Identify any fallacies that may be committed.
If X and Yare independent Poisson random variables, show that the conditional distribution of X, given X + Y, is binomial.
A researcher obtains a significant interaction and a significant main effect. Which significant effect should the researcher typically analyze first? Explain.
In a BMT class test the scores of 8 students are: 11; 10; 6; 3; 11; 10; 9; 11. Assume the sores are a simple random sample from a normally distributed population. What is the point estimate of the standard deviation?
consider a data set in which all observations are equal. find the range variance and standard deviation for this data
medical treatment will cure about 87 of all people who suffer from a certain eye disorder. suppose a large medical
Suppose X and Y are independent random variables with X ~ Gamma(a1, ?) and Y ~ Gamma(a2, ?). Is X + Y a gamma random variable? If so
Use a 0.05 significance level to test the claim that the mean speed of all cars is greater than the posted speed limit of 70 mph. Based on the above situation compute the value of the test statistic.
The subject of employee health and safety is a broad one. Chose only one element of employee health and safety and good deep into the subject.
Multiple choice question based on multiple regression - The coefficient of determination for this model is
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