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Binomial probability explained in this solutionIf the parents have 5 children, the number who have type O blood is a random variable X that has the binomial distribution with n=5 and p=0.25
a) What are the possible values of X?
b) Find the probability of each value of X. Draw a histogram to display this distribution. (Because probabilities are long-run proportions, a histogram with the probabilities as the heights of the bars shows what the distribution of X would be in very many repetitions.)
Suppose you wish to test a one-tail hypothesis where you reject H0 only in the lower tail. You calculate ZSTAT = 1.38. What is the statistical decision if you test the null hypothesis at the 0.01 level of significance?
Write the null and alternative hypotheses you would use to test the following situation.
From National Weather Service records, the annual snowfall in the TopKick Mountains has a mean of 92 inches and a standard deviation ? of 12 inches.
Why do we do power calculations with single sample z test? A) Because we can use Z area tables to calculate the power. B) Because comparing a sample mean against a population mean is very powerful
Show the graph of the probability density function for flight time.
First, write down three social problems (e.g., drug abuse, gang membership, bullying, domestic violence, child abuse, etc) that we might attempt to predict using logistical regression.
(a) Write the fitted regression equation, (c) What is your conclusion about the slope.
Construct a frequency distribution, percentage distribution, and cumulative percentage distribution for average airfares.
By using standard normal table, determine critical value (or values) for= 0.14 right-tailed test.
An HMO is considering a marketing plan targeting patients with chronic diseases to increase the number getting a flu shot. Some preliminary analyses are conducted before implementing such a plan.
Construct a 95% confidence interval on the population mean for the following sample data set:
At the .01 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales?
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