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The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with mean 6.7 minutes and standard deviation 2.2 minutes. For a door selected at random, what is the probability the assembly line time will be between 5 and 10 minutes? Place your answer, rounded to 4 decimal places, in the blank. For example, 0.1776 would be a legitimate answer
an urn contains w1 white and b1 black balls. a second urn contains w2 white and b2 black balls. a ball is selected at
a researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back pain. prior to
a certain type of yarn is manufactured under specifications that the mean tensile strength must be 20 pounds. a random
While the 46 afternoon students' average score was 79.44 with a standard deviation of 6.62. (a) Which test would you use to compare the means?
If the sales, employment, production, and other business series increase or decrease over a period of time and approximate a straight line, the equation for this growth is given by
What are the main difference between the frequency distribution of continuous data and discrete data.2. How would you present a continuous data as though discrete?
Describe the five steps of hypothesis testing. Compare Type I and Type II errors and give specific examples for each. Which error should be minimized the most and first?
for each of the following find the probability for the given normal distirbutiona. p x gt 4 if x - n 5 52b. p x lt 2
the prior probability indicates that there is 50 probability that gold will be found in quantities that would justify
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Security B has an expected return of 12 percent, a standard deviation of returns of 10 percent, a correlation with the market of 0.7 and a beta coefficient of 1.0.
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