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According to Harper's Index, 48% of all federal inmates are serving time for drug dealing. A random sample of 15 federal inmates is selected.
What is the probability that 10 or more are serving time for drug dealing? (Use 3 decimal places.)
What is the expected number of inmates serving time for drug dealing? (Use 1 decimal place.)
A stationery store wants to estimate the mean retail value of greeting cards that it has in its inventory. A random sample of 100 greeting cards indicates a mean value of $2.55 and a standard deviation of $0.44.
Crystal Ball requires the following steps:
Identify the sensitivity ranges for the profit of a sausauge biscuit and the amount of saisage available. Explain these sensitivity ranges
the 92 million americans of age 50 and over control 50 percent of all discretionary income aarp bulletin march 2008.
What is the probability that a call lasted between 180 and 300 seconds? What is the length of a call if only 1% of all calls are shorter?
construct a frequency distribution table for these data. what type of graph would be appropriate to show the frequency distribution for these data?
a population is normally distributed with 100 and s20.a. find the probability that a value randomly selected from this
In February 2002, the Argentine peso lost 70% of its value compared to the United States dollar. This devaluation drastically raised the price of imported products.
Given a sample size of 9,245, a sample mean of 38, a standard deviation of 8.15, and a confidence level of 97%, calculate the lower bound of the confidence interval.
A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each loation.
You have been research for your statistics class on how nervous the American adults are in general, you have decided to use HINTS 2007 data set that has a scale (going from 0 to 24)measuring the psychological distress of the respondents.
Using the raw measurement data presented below, calculate the t value for independent groups to determine whether or not there exists a statistically significant difference between the salaries of female and male human resource managers.
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