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Consider the experiment of throwing an ideal die three times(all outcomes are equally likely). Let X and M denote the mean and the median respectively, of the three scores obtained.
a) find E(X)
What does it mean to say that a particular value of x has a z-score of -2.1?
Which of the following statements is not true of the null hypothesis? A) It is your theory B) It is what you would expect by chance alone C) Assumes things to be equal D) None of the above
The bank wishes to inform prospective customers that '99 times out 100 we can process your application in q working days'. Assuming that the normal distribution is still an adequate model, calculate q.
Scores on certain nationwide college entrance examination follow normal distribution with mean of 500 and a standard deviation of 100. Determine the probability that student will score?
At the .05 significance level, can we conclude that the guideline is still reasonable?
Explain why we need to use the t distribution. What assumption do you need to make?
Find the probability of a Type II error if in fact the mean waiting time is actually 9.8 minutes.
What is the probability that a particular driver had exactly two speeding violations?
What can you conclude regarding the information? Who tends to order the most or least number of condiments?
Test for significant differences among weight losses for the five diets, and perform all pair wise comparisons using:
Suppose the population is normally distributed they make a decision to do a hypothesis test.
Consider a hypothesis test that uses a 0.05 significance level to test the claim that the mean body tem of the population is less than 98.6
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