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A lawyer researched the average number of years served by 45 different justices on the Supreme Court. The average number of years served was 13.8 years with a standard deviation of 7.3 years. What is the 95% confidence interval estimate for the average number of years served by all Supreme Court justices?
The Ntional Lightning Detection Newtowk uses automatic sensors to watch for lightning in areas of 10 square kilometers. What are the mean and standard deviation of the total number of lightning strikes observed?
Determine the first two cumulants also the ratio between the standard deviation and average energy. Explain why distribution becomes extremely narrow.
To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.
What is the probability that at least one left-handed student in this class is forced to use a seat designed for a right-hander?
A sample standard deviation of 25 a sixth baby has a birth weight of 125. After the sixth baby, the sample standard deviation is?
Show the sampling distribution of p if a random sample of 150 insured individuals is used to estimate the proportion having received at least one ticket.
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability that all 3 cards are queens. A fair coin is tossed 8 times in succession. Find the probability of getting at least 4 heads.
This fits the form of a binomial experiment situation. Develop a 95% confidence statement. Show all of the steps. How do you do this?
Chocolate bars produced by a certain machine are labeled with 16.0 oz. The distribution of the actual weights of these chocolate bars is Normal with a mean of 16.1 oz and a standard deviation of 0.1 oz. A chocolate bar is considered underweight if..
What is correlation? Does correlation directly support causation, what are both sides of the argument?
Place a 95% confidence interval about the population mean number of down hours per month.
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