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The time (in seconds) needed to complete a critical task on an assembly line was measured for a sample of 50 assemblies.The date is displayed in the accompanying table.40.3 41.9 44.4 42.8 41.1 42.2 40.7 46.8 40.5 40.644.5 43.1 40.1 40.7 40.9 40.7 40.2 40.6 47.9 41.041.1 44.6 40.2 43.1 41.1 42.1 40.6 41.5 40.2 40.340.9 40.0 41.6 40.2 44.4 44.2 40.2 40.1 41.4 44.143.7 42.7 42.4 42.8 41.0 40.7 43.4 45.7 40.7 40.4
Using the stem and leaf technique, construct a less-than cumulative frequency distribution. -Draw to scale a histogram, frequency polygon and less-than cumulative ogive using the information from 1. Use the ogive to determine the range and the mid80% range. Determine the coefficient of variation. Interpret your answer.
In a sample of 32 DVD players, what is the probability the average life will be less than 8 years (96 months)? (please round your answer to 4 decimal places).
Gain follows the modern practice of using probability estimates of sales. The military division estimates its sales as follows. Find the standard deviation of the estimated profit, Z = 2000X + 3500Y.
Find the empirical probability that an iris bulb of this type will bloom. Give answer as a fraction in lowest terms. How many of the bulbs should she plant next fall if she would like at least 52 to bloom?
Given that Vacationer will travel less than 500 miles, Find out the probability that he/she will drive or take the Bus/Train?
Sample without replacement when testing batches of products. When sampling without replacement, should you use the multiplication rule for independent or dependent events.
A test result x
Prepare a frequency distribution from data given below that describes how long it took a person to drive to work in work week.
This fits the form of a binomial experiment situation. Develop a 95% confidence statement. Show all of the steps. How do you do this?
Using the sample information given in the above exercise, the p value for testing Ho versus Ha can be calculated to be 0.0057
What is a one-tailed test? What is a two-tailed test? Explain at least three differences between one- and two-tailed tests. State a hypothesis related to this study that would cause you to conduct a one-tailed test. State a hypothesis related to th..
What's the expected value of sample information? How much might the physicians be willing to pay for a market study?
Determine the point estimate? Give the symbol and value.
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