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1. What is the standard deviation of the sampling distribution?
2. What is the expected value?
3. What is the probability that the average life in the sample will be between 2,670.56 and 2,809.76 hours?
4. What is the probability that the average life in the sample will be greater than 3,219.24 hours?
5. What is the probability that the average life in the sample will be less than 3,180.96 hours?
Question is based on statistics binomial and poisson distributions. Where n=8 patients, and p=0.90= probability of a successful surgery, can anyone find the probability of exactly 8 successes in 8 surgeries?
A person has purchased 5 of 1,000 tickets sold in a certain raffle. To determine the 10 prizewinners, 10 tickets are drawn at random and without replacement. compute the probability that he wins at least one prize.
Speculate how this might improve forensic DNA analysis in terms of statistics and the "1 in 150 trillion people" statement.
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.
Use the steps of hypothesis testing, (b) figure the effect size for the study; and (c) explain your answers to parts (a) and (b) to someone who has never had.
We know that overseas returns will vary in years having the same return on U.S. common stocks. Write the regression model based on population regression line
Howell (1992, p. 153) reports on a study by Latané and Dabbs (1975) in which a researcher entered an elevator and dropped a handful of pencils.
The time between breakdowns of aging machines is known to be exponentially distributed with a mean of 25 hours. The machine has just been repaired.
Do you think n = 30 would be large enough for the approximate normal shape to hold? What is different about these two examples?
Rewrite in the following alternative format with left and right endpoints:Would a given mean value of 79.56 be likely, given the calculated confidence interval?
A rectangular garden has dimensions of 25 feet by 19 feet . A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 672 square feet?
Write introduction to SPC (STATISTICAL PROCESS CONTROL)? Describe the use of SPC tools used at D2D?
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