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A machine has three components working independently. The probability that Component A fails is 0.1, the probability that component B fails is 0.2, and the probability that component C fails is 0.3.
(A) What is the probability that none of the components will fail ???
(B) What is the probability that at least one component will fail ???
(C) What is the probability that only one component will fail ? That is, what is the probability that one component will fail, but the other two will not fail ??
A sample of size 9 is drawn at random from a Normal distribution. The experiment has a null hypothesis of μ = 0 and an alternate hypothesis of μ > 0. The mean of the sample is 7 with an s of 8. Is there a difference at the 1% level?
The owner of Maumee Ford-Mercury wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.
Suppose that combined verbal and math SAT scores follow a normal distribution with mean 896 and standard deviation 174. Suppose further that Peter finds out that he scored in the top 3% of SAT scores. Determine how high Peter's score must have bee..
Draw the graph of the regression line on the same plot as the scatter diagram above.
The following is a time series data set. Run a time-series analysis for projections of April 2009 in the Healthcare industry of Nashville.
Describe a business-related situation in which you would expect there to be a strong relationship (correlation) between an independent and dependent variable.
Can researcher conclude that humidity has significant effect on eating behaviour? Use two-tailed test with a = 0.05.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
According to the U.S. Census Bureau, the mean household income in the United States in 2000 was $57,045 and the median household income was $42,148.
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
A transatlantic plane carries 140 passengers. It is known that the average weight of all passengers on that plane is 147.14 pounds, that the men on that plane weigh on the average 170 pounds, and women 130 pounds. How many men and how many women w..
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