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Suppose that 51% of the population of U.S. voters favors a particular candidate. If a random sample of 40 voters is chosen, approx. the probability that more than 20 favor this candidate. Use the normal approximation to the binomial with a correction for continuity.
Critical Thinking: Discuss the implications of: magnitude (from 0 to 1); sign ( + or -); and probability versus causality for the Correlation Coefficient (also known as the Pearson Product-Moment Correlation Coefficient).
Find each value requested for the distribution of scores in following table. For the following scores the lowest value is x=13 place the scores in a frequency distribution table using.
Is this sample sufficient to conclude that the eye spots have a significant influence on the birds behavior? Use a two tail test with alpha =.05. Compute the estimated Cohen's d to measure the size of the treatment.
Determine the probability of choosing at random license plate which ends in the even number?
The F test is used in Analysis of Variance (ANOVA). When would a researcher use an ANOVA? Explain (one paragraph in length).
The test statistic for a two-sided significance test for a population mean is z = -2.12. What is the corresponding P -value?
How would you find the normal approximation to the binomial probability P(x = 5) in part A? Please show how you would calculate µ and σ in the formula for the normal approximation to the binomial, and show the final formula you would use without g..
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
Describe a scenario related to the final project in which you would use repeated-measures ANOVA. Describe a scenario related to the final project in which you would use MANOVA.
Consider the many possible distributions of grades on a quiz in a statistics class; imagine that the grades could range from 0 to 100.
A researcher wanted to invetigate whether there is a significant difference in the average age of instructors, assistant professors, assocated professors and full professors at a university. The faculty was selected at random and their ages were r..
What is the probability that a person who has submitted one entry will win the following?
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