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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.
Election poll reported that applicant had n approval rating 31% with margin of error E of 4%. Create a confidence interval for proportion of adults who approved of applicant.
In past, mean processing time was 45 days. At 0.05 level of significance, is there evidence that mean processing time has changed from 45 days?
A researcher used stepwise regression to create regression models to predict Birth-Rate (births per1000) using five predictors:
The study does not give sufficient evidence to support the claim that less than 75% of college students spend less than $250 per semester on textbooks.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Find out the critical value for the given degrees of freedom of the F-test also the lower-tailed critical value of F test for the similar level of significance
Kind of examination produced significant main effects on both mean mark and time taken to complete the examination.
Make for more scatter plots comparing GDP growth 1970-2000 to corruption, political rights, rule of law, and socio-political instability
Determine the probability that a randomly selected teacher earns more than $525 per week?
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
Create probability tree showing all marginal, conditional, and joint probabilities. Create a joint probability table.
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
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