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Conduct a study to examine the relationship between party affiliation and gender. You find the following:
Democrat Republican IndependentMale 52 65 20Female 88 52 35
Are sex and party affiliation related?
Report the appropriate null and research hypotheses and the critical value (alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic and what the data suggests in one to two sentences.
Determine regression line for predicting January temperature from latitude.
A college student is taking 5 courses in a semester. He is willing to assume that he will get an A with probability 0.10, a B with probability 0.80, and a C with probability 0.1 in each of the courses. He defines X1, X2, and X3 to be the number of..
Why are estimations and confidence intervals important? Do confidence intervals and estimation play a role in the selection of sample size?
For certain bird species, wiith appropriate assumptions, the number of nests escaping predation has a binomial distribution. Suppose the probability of success (that is, a nest's escaping predation is .3. Find the probability that at least half of..
You are running a chi-squared test. If you have 5 groups with 3 characteristics each, what would your critical value be with an alpha of .25? a . Between 0 and 3.0
Find out 90% confidence interval for mean grade of all the students in the class.
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
What is the appropriate inferential statistical test for the case scenario? Why?
A sample of 144 cans of coffee showed an average weight of 16 ounces. The standard deviation of the population is known to be 1.4 ounces.
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be
What is the probability that both defective lights will be found within three trials?
Probability of a flush. Poker player holds flush when all 5 cards in hand belong to same suit (clubs, diamonds, hearts, or spades).
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