Confidence interval for a sample size
The appropriate t-value to use when constructing a 95% confidence interval for a sample size of 12 is?
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Find the discharge with an annual exceedance probability of 0.02. Find the annual exceedance probability of the 1972 flood.
The lifetime of a certain transistor in a certain application has mean 900 hours and standard deviation 30 hours. Find the mean and standard deviation of the length of time that four transistors will last.
Calculate the standard error? Find the t-value corresponding to a sample size of 9. (Hint: Either use a t-table or Tools -> Statistical Tables in Gretl. The d.f. = 8 and the right-tail probability is 0.025.) Construct the 95% confidence interva
Calculate the standard error. Find the corresponding z-value to use for a proportion with a 95% confidence level. Construct the 95% confidence interval for the proportion of households represented in a town meeting.
40% of candidates come from School X, 40 % from SChool Y and 20% from School Z. Given that a candidate passed the exam what is the probability that they are from school Z?
What is the probability the test will be positive if administered randomly from the population. Suppose the test is used to screen applicants for insurance. The test is positive. What is the probability the applicant has Hep-C
Based on available information, lead time demand for CD-ROM drives averages 250 units (normally distributed), with a standard deviation of 25 drives. Management want s a 98% service level.
Let X denote the number of transmission errors per 128-bit message sent. Is X geometric? If not, what geometric property fails?
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What Environmental Control Plan pertains to replacing unsafe, unhealthy working conditions or practices with safer, health-enhancing policies
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