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What is the central limit theorem? According to the central limit theorem the expected value for a sample mean is ________ as the sample size approaches infinity? WHY?
If the student IQ score is 90, what is the probability that another student randomly selected has an IQ score of below 90?
Political prisoners Mathew, Mark, and Luke are told that two of the three are to be executed. Matthew takes the jailer aside and says, "We both know that at least one of the others, Mark or Luke, will be executed
Explain how the power of a hypothesis test is influenced by each of the following. Assume that all other factors are held constant.
You perform a one sample mean hypothesis test on a random sample of data and observe a p-value of 0.2157. What is the appropriate conclusion? Conclude at the 5% level of significance.
At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly?
What sampling method is best suited for such a survey? Why? Draw the sample using the random number table and bring out the rationale of the procedure. Limit your sample to 25 persons.
Speed of cars travelling on I-85 in Gaston County is normally distributed with average speed (µ) of 66 MPH and standard deviation (σ) of 8 MPH.
difference between the population proportions. You may assume the samples are independent. Which of the following gives the justification for normality in this situation?
Conclude that is there a difference in the two amounts?
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
Find out the forecast value utilizing three month moving average method, weighted moving average method, exponential smoothing and regression methods.
1. a random variable has possible values of 20 21 22 23 and 24 that are equally likely to occur.a what is the
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