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The heights of adults in one town have a mean of 66.3 inches and a standard deviation of 3.3 inches. What can you conclude from chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches? Show all work.
Determine the observed p-value for the hypothesis test and interpret this value. What does this mean?
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range.
The standard deviation equaled five days. Assuming that the distribution is normal, what percent of the invoices were paid within 15 days of receipt?
A gardner plants 12 flowers. It is perdicted that on an average, 15% of the flowers planted will die during the first winter. Using the information above, please answer the following questions:
What is the null hypothesis in a chi-squared test of independence? How many 'tails' can a chi-squared test have, one or two? In a regression analysis, what do the residuals from the fitted line add up to?
Two pain relief drugs are being considered. A random sample of 6 doses of the first drug showed that the average amount of time required before the drug was absorbed into the bloodstream was ??
We are certain the the average difference in reaction times between the two light types for all golfers is between 0.27 and 7.13.
In a random sample of 10 on-line statistics students, information was collected about their minutes studied and their chapter test scores. Is this relationship positive, negative or no relation?
Assume that the price of non-dividend paying stock is $32, its volatility is 30%, and the risk-free rate for all maturities is 5% per annum. Use derivagem to calculate the costs of setting up the following positions.
In a shipment of 52 vials, only 12 do not have hairline cracks. If you randomly select 2 vials from the shipment, what is the probability that none of the 2 vials have hairline cracks?
The average hourly wage of workers in a fast food restaurant is $5.85 with a standard deviation of $0.35. Assume that the distribution is normal.
Could you please show me how you computed the two critical values to (2.18, 17.83) ? Which formula you used ?
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