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Quality Control specialists design a study aimed at estimating the average assembly time for a new device. They assume that individual records are independent normally distributed with population standard deviation = σ = 2.5 minutes. Find the smallest sample size = n, such that the 95% confidence interval for the population mean = µ is no wider than 1 minute. 1. Show the critical value for design of this study 2. Indicate the formula used in this case and show the smallest sample size needed.
Bureau of Labor Statistics experts design a study aimed at estimating the unknown proportion = p of self-employed programmers. They intend to use confidence level = C = 0.90 and want to have the margin of error bounded by B = 2%. Find the smallest sample size n that will be required for this study. 1. Show the critical value needed for the study 2. Indicate which formula you use in this case and show the smallest sample size needed.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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