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We are sampling randomly from a distribution known to be bimodal.
a) As our sample size increases, what's the expected shape of the samples distribution?
b) What's the expected value of our sample s mean? Does the size of the sample matter?
c) How is the variability of this sample s mean related to the standard deviation of the population? Does the size of the sample matter?
d) How is the shape of the sampling distribution model affected by the sample size?
The marketing manager of a company that manufactures and distributes farming equipment (such as combine harvesters, ploughs and tractors) recorded the number of farming units sold quarterly for the period 2008 to 2011.
Describe different methods of establishing correlation between variables and provide an example for each and explain the advantages and disadvantages of each method and where each must be applied.
suppose fx y1 amp gx y xy 0lt x lt1 0ltylt1 determine the most powerful test of size ? .05 of hypxyf
in a binomial distribution for each of n trials the event result of the first trial influence the next
Provides a measure of skewness in the distribution of X. Determine the value of b3 for this distribution and using a suitable distributional approximation, find the probability that the mean of a random sample of n = 25 observations will exceed 2.5.
1. If the margin of error for a 95% confidence interval is 0.015, the sample size is . (Give your answer as a whole number.)
Create a probability model for the amount you win at this game.- Find the expected amount you'll win.- How much would you be willing to pay to play this game?
Suppose that Archie does, in fact, make it to the test on time. What is the probability that he took the bus? Round your answer to two decimal places.
Find the standardized z-statistics for P^ =.20 and P^ =.33.- Draw a picture of the sampling distribution of P^, and identify where P^ =.20 and P^ =.33 fall on the picture.
the f-distribution is defined as thea. distribution of all possible values of f regardless of whether h0 is true or
which of the follow samples will have the smallest value for estimated standard error?n 100 with s2nbsp 100n 25 with
Based on your confidence interval in (6), is it reasonable to say that half of the citizens of Pandora would support the building of a nuclear power plan in the city to generate future power requirement? Explanin how you made your decision.
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