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Suppose that the battery failure time, measure in hours, has probability density function given by: f(x) = 2 / (x +1)3 x?0.
What is the first quartile of X?
Suppose that the diameter of a metal cylinder has a probability density function given by: f(x) = 1.5 - 6( x - 50)2 for 49.5 ? x ? 50.5 mm
What is the variance of the diameter?
A human resources director, on learning about the regression effect, decides to hire people who have been fired by their previous employer for poor performance.
if a machine disk slips the probability that the product is not acceptable is 0.74 overall 8 of the product from this
Of 970 subjects, 20 answered yes and 950 answered no. find p^, the proportion of the sample who were victims. Find the standard error of this estimate.
Which one/s of these factors (independent variables) will have a negative correlation with bone density and which one/s will have a positive correlation?
homework question....i3939m stuck ltbrgt ltbrgt23.an experiment is conducted in which 60 participants each fill out a
Calculate the test statistic, and interpret the result, calculate the p-value, and interpret the result and determine the rejection and non-rejection regions.
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Research reports an F=ratio with df=3.36 from independent-measures research study. How many treatment conditions were reported in the study what was the total number of participants?
The waiting time to place an order at a branch of a fast-food chain during the lunch hour has had population mean of 3.55 minutes, with a population standard deviation of 1.1 minute.
The distribution of box weights is normally distributed with a mean of 9 ounces and a variance of 0.01 ounces. What is the probability of randomly selecting a box containing less than 8.9 ounces?
State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
the length of time between breakdowns of an essential piece of equipment is important in the decision of the use of
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