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Assume that couple will have three children, letting B denote a boy and G denote a girl.
a) Draw a tree diagram depicting the sample space outcomes for this experiment.
b) List the sample space outcomes that correspond to each of following events:
1) All 3 children will have same gender.
2) Exactly two of the three children will be girls
3) Exactly one of the three children will be girl
4) None of the three children will be a girl
c) Suppose that all sample space outcomes are equaly likely, determine the probability of each of events given in part b.
At the .05 significance level, can we conclude that there is a difference in their mean times?
Shopper Trak is a hidden electric eye designed to count the number of shoppers entering a store. When two shoppers enter the store together one walking in front of the other, the following possibilities apply.
Is there evidence to suggest that the training course helps out sales people?
Discuss possible study designs. Which of the designs would we use to test our research hypothesis?
Describe the sampling distribution model of this mean.
Utilize the given degree of confidence also sample data to construct a confidence interval for population proportion.
Create a 95% confidence interval for true mean debt for student borrowers.
What decision should be made regarding the null hypothesis?
Assume P1 and P2 move simultaneously. Represent this game in normal form.
The intelligence Quotient test scores normally distributed with a mean of 100 and a standard deviation of 15.
(a) Use the steps of hypothesis testing, (b) figure the effect size for the study; and (c) explain your answers to (a) and (b) to someone who has never had a course in statistics.
Define the decision rule. Calculate the value of the test statistic.
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