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Perception of Time- Randomly selected statistics students of the author participated in and experiment to test their ability to determine when 1 min(or 60 seconds) has passed. Forty students yeilded a sample mean of 58.3 sec. Assume σ that standard deviation = 9.5 sec.
The response variable is the change in cholesterol level after two months of treatment. An analysis of variance will be used to compare the three treatments. What null hypothesis is tested by this ANOVA F-test?
Find out how to minimize cost of meeting demands in Houston and Tampa.
A Correlation matrix (correlation, coefficients and probability level under the hypothesis rho= 0) for a company's sales force (age, years of service, and current sales) is given below. Comment.
The probability that a patient recovers from a disease is 63%. What is the probability that:
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
Calculate the standard error. With 95% confidence, find out the margin of error?
What are some differences between discrete and continuous data? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using a normal distribution? Why or why not?
What contingency table test is used to see if there is a difference in the frequency distribution for two different groups?
What is the percentage of variation in the dependent variable explained by the variation in the independent variable.
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
Multiple choices based on regression analysis - how much or how many but instead is assigned values to represent categories
A certain state lottery awards 418 prizes; 28-$200 prizes, 120-$25 prizes and 270-$20 prizes, for every 10,000 tickets sold.
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