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1. Quiz has 8 questions. Each question has 3 possible answers and only one answer is correct
a) Calculate probability to get 5 correct answers
b) Calculate probability to get 2 and 4 correct answers
c) Calculate probability to get 2 or 4 correct answers
a) Create a probability model for this carnival game. b) Find the expected number of darts you'll throw.
A chi-square test of the statistical significance of the relationship has a p-value of .19. Is this evidence that there is a relationship? What is the justification for this conclusion?
question an outbreak of food-borne illness was attributed to salmonella. epidemiologists determined that the outbreak
A standard deviation of $3000. find the salaries for teachers in the bottom 10% and upper 10%, then transform from a z score to an x-score.
How much? energy, in? joules, do you require from food in a? year? Counting all forms of energy? (such as? gasoline, electricity, and energy for? heating)
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
Fit the first-order model to the data.- Calculate the residuals and construct a residual plot versus y^.- What does the plot from part b suggest about the variance of y?
Compute the summary statistics for asking price, number of miles, and other variables of interest. Remember, the summary statistics include min, max, mean.
A role as a statistical consultant. You are the statistical expert for a graduate student planning her PhD research. After you carefully present the mechanics of signi?cance testing, she suggests using α = 0.25 for the study because she would be m..
Based on the sample findings, estimate the true mean of Saturday sales with 90% probability.
Calculate the z score for a raw score of 10 from the folowing scores:10,20,25,5,30. Based on your anser , approximately what percentile does the raw score of 10 represent?
What is the standard deviation of the sampling distribution of p(hat) the proportion of all rolls of the die that show a 1 or a 2? 3.)
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