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The random variable X, the time to failure (in thousands of miles driven) of the signal lights on an automobile has a Weibull distribution with a = 0.04 and ß = 2.
a) find the density, mean, and variance for X.
b) find the reliability function for x.
c) what is the reliability of these lights at 5000 miles? At 10,000 miles?
d) what is the hazard rate function?
e) what is the hazard rate at 5000 miles? At 10,000 miles?
f) what is the probability that the lights will fail during the first 3000 miles driven?
Suppose there is no cyclical component. Quarterly billing for water usage is shown below describe summer billing for year 5.
Determine the p-value for this test. Is there sufficient evidence to justify the rejection of H0 at the "alpha" level of 0.01? Please explain your answer.
A recent national survey found that high school students watched an average (mean) of 6.8 videos per month. A random sample of 36 college students revealed that the mean number of videos watched last month was 6.2
a study by hewitt associates showed that 79 of companies offer employees flexible scheduling. suppose a researcher
Develop two-null hypothesis tests to ascertain if there are any statistical variances in the averages of bus route times and any statistical variance among the average performance of the bus drivers. Use the following information to conduct the te..
Construct a 95% confidence interval for the population mean service charge if a customer's account falls below the $1,500 minimum.
describe the properties of central tendency and shape in numerical data. explain how to find the range variance and
assume you plan to construct a 95 confidence interval. the numbers of online applications from simple random samples of
compute the correlation coefficient for the data below to the thousandths place please show workx values-2-103y
Assuming that the sample was not skewed (i.e. it was normally distributed), about how many exam scores would you expect to fall between the range of 75 to 85?
Some television stations attempt to gauge public opinions by posing a question on the air and asking viewers to call to give their opinions.
It has been determined that the mean life is 1000 hours and the standard deviation is 50 hours. It can be concluded that at least 89% of the bulbs will last between?
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