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A genetic experiment with peas resulted in one sample of offspring that consisted of 438 green peas and 159 yellow peas.
A. 90 % Confidence intervals to estimate the percentage of yellow peas would be?
B. It was expected that 25% of the offspring peas would be yellow. Given that percentage of offspring yellow peas is not 25%, do the results contradict expectations?
The sample mean of the sampling distribution of a statistic is 6 and the standard error of the statistic is 1.03. What is the probability that xbar > 7.52?
Define correlation. Then give an example of a misleading correlation and an example of a meaningful correlation. With this describe the relationship between correlation and causation.
Scores are obtained from the Law School Admission Test (LSAT) are normally distributed with a mean score of 550 and a standard deviation of 110.
A researcher is conducting proportionate stratified random sampling with a sample size of 250. Approximately how many people should be sampled from each stratum?
A newspaper ad for a manager trainee position contained the statement "Our manager trainees have a first-year earnings average of $20,000 to $24,000." Do you think that the ad is describing a confidence interval? Explain your answer.
While purchasing a home, location is everything. As a buyer, one should be aware of the cost of living in the area of choice, as well as expect a higher cost the closer to the center of town you get.
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
The Federal minimum wage is $7.25 (effective July 2009). If an employee earns the new minimum wage, how many complaints can that employee expect to receive?
If the sample size is 36 with three treatment means (response variables) and you are performing an ANOVA, then the degrees of freedom for the error term will be:
A defective picture tube was discovered in the latest shipment. What is the probability that it came from Tyson Wholesale?
Of those mountain climbers who attempt mt. McKinley, only 60% reach the summit. In a random sample of 14 mountain climbers who are going to attempt mt. McKinley, what is the probability of each of the following?
The analysis of covariance (ANCOVA) is generally useful for _______________
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