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Assume the screening test has sensitivity of 0.98 and false-positive rate of 0.01. Calculate and interpret meaning of PV+, if test is used in the population which has the disease prevalence of 0.001.
Although the two samples have an identica winning percentage,one is significant and the other is not. Explain why the two samples lead to different conclusions.
According to US Census Bureau, 7.1% of all births to non-smoking mothers are of low birth weight (
To test whether the population mean is less than a specified value.
In the year 2000, the state of Indiana began a $40-million renovation of its state fairgrounds, which included the building of a miniature golf course and a state-of-the-art livestock building.
Given that the price-to-earnings ratios are uniformly distributed, answer the following questions. What percent of price-to-earnings ratios are between 1.90 and 2.48?
Findout probabilities utilizing standard normal distribution. If the debt is normally distributed with a standard deviation.
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
As long as there is either an upward or downward trend in the data, will a k-period moving average have a smaller mean square error than a moving average obtained with k+1 periods? Why or why not?
What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?
Illustrate what does weighting add to usefulness of moving averages and explain how is it done. The yield on a thirty year treasury note at the end of every year since 1990 is recorded below.
Find the mean, median, mode, variance, standard deviation, frequency table, cumulative frequency table, coefficient of variation, and mean deviation of the population.
Rhe frequency distribution summarizes a sample of times (in minutes) between eruptions of a cretain geyser. Find the approximate population mean and approximate population standard deviation of the data.
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