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A financial analyst is interested in comparing the turnover rates, in percent, for shares of oil-related stocks versus other stocks, such as GE and IBM. She selected 32 oil-related stocks and 49 other stocks. The mean turnover rate of oil-related stock is 31.4 percent and the standard deviation 5.1 percent. For the other stocks, the mean rate was computed to be 34.9 percent and the standard deviation 6.7 percent. Is there a significant difference in the turnover rates of the two types of stock at the 0.01 level of significance? Calculate the p-value.
Two t-curves have degrees of freedom 12 and 20, respectively. Which one more closely resembles the standard normal curve? Explain your answer.
List the sample space. Determine the exact probability of creating a mini license plate with an E. Give solution exactly in reduced fraction form.
three children a couple plans on having three children. suppose that the probability of any given child being female is
a particular manufacturing design requires a shaft with a diameter between 19.88 mm and 20.018 mm. the manufacturing
The annual real return Y on the Diversified International Fund has mean 11% and standard deviation 17%, and the correlation between X and Y is 0.6. The return on Linda's portfolio is R = 0.7X + 0.3Y. What are the mean and standard deviation of R?
consider the following. give your answers correct to two decimal places.a determine the value of the confidence
Find the probability that on any given day the daily power consumption will exceed 12 million kilowatt-hours.
A claim from the National Lifeguard Association is that the population proportion of drowning deaths of children attributable to beaches is 0.25. A sample of 700 drowning deaths of children in U.S. last year showed that 30% of them were attributab..
The intelligence Quotient test scores normally distributed with a mean of 100 and a standard deviation of 15.
Find the prob. that they get such a family and the boy is the youngest
The distance is recorded for each hit, and the results are shown below, organized by brand. Carry out a complete analysis using ANOVA and a 5% significance level.
what makes the standard normal distribution different from other
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