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Describe whether each distribution below is skewed. Tell why you think so?
1. Lengths of pant legs cut and sewn to be 32" long.
2. The times for 300 college students of introductory statistics to complete a one-hour times exam.
Choose one of the options below that explains what information is provided in the interval that is not in the significance test results:
If you draw one ball from the urn what is the probability that it is blue or white?
If 16 measurements are taken and the standard deviation is 2.1 mg/dl is there enough evidence to support the claim that her standard deviation is greatear than the target at a = 0.01?
Findout probabilities utilizing standard normal distribution. If the debt is normally distributed with a standard deviation.
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
Determine Probability using exponential distribution.The average time between failures of a laser machine is exponentially distributed with the mean of 40,000 hours.
A histogram of time spent eating & drinking each day is skewed right. Use this result to explain why a large sample size is needed to construct a confidence interval for the mean time spent eating & drinking each day.
What descriptive summary measures would you use to present the data. which measure is the best to use and which is the worse and why?
Evaluate the value of the F statistic for Devices- I plan an experiment to test the latest conflicting diet programs. The factor for Diet will involve three different levels: low fat, low carbohydrate, and low calorie. The other factor will involve..
If measurements are made over span of 9 months, and results are averaged, find out the probability that neighbourhood is considered unsafe?
What happens to the expected return and standard deviation of returns of the portfolio in Part a if the following conditions exist?
At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.
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