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Many Raleigh, north Carolinian's owns one or more TVs. Below is a distribution of the number of TVs per house hold in Raleigh. Fill in the missing probability to make a valid discrete probability distribution or explain why this is not possible
x
0
1
2
3
4
P(x)
0.067
0.384
0.321
0.121
A social scientist analyzes the relationship between educational attainment and salary. For 65 individuals he collects data on each individual's educational.
Management further believes that the probabilities of favorable, neutral, and unfavorable political situations are 0.6, 0.2, and 0.2, respectively.
Stem Cell Survey - Adults were randomly selected for a Newsweek poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos.
The U.S. Bureau of Labor Statistics released hourly wage figures for western countries in 2000 in the manufacturing sector. The hourly wage was $24.01 in Germany, $22.00 in Japan, and $19.86 in the United States.
With a random sample of 40 observations, what is the probability of obtaining a sample mean greater than 7.1?
there are 14 marketing firms hiring new graduates. kate randomly found the recruitment ads of six of these firms and
Set up the null and alternative hypotheses, and perform the hypothesis test with a significance level of 0.05.
One-half of a sample receives an incentive in a mail survey. The other half does not. A comparison of response rates is desired.
For an examination in which grades of 70 and 88 correspond to standard scores of -0.6 and 1.4 respectively. Find:
The student academic group on a college campus claims that freshman students study at least 2.5 hours per day, on average.
A box contains 7 white balls and 3 red balls. Three balls are drawn at random. Inn how many ways can the three balls be drawn.
The length of a bearing has mean 2 cm and standard deviation 0.001 mm. What are the mean and standard deviation of the total length of the assembly?
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