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A 95% confidence interval (using the conservative value for the degrees of freedom) for μ1 - μ2, based on two independent samples of sizes 18 and 20, respectively, gives us (45.6, 56.7).
What would be the margin of error for a 99% confidence interval for μ1 - μ2?
a family plans to have 3 children. for each birth assume that the probability of a boy is the same as the probability
Mention the advantages ofgraphic presentation of statistical data. What are the general rules for graphing the data? Explain how tables, graphs and charts help in the effective presentation of data.
Treat the relative frequencies as probabilities and determine the probability that an arbitrarily chosen boy responds yes.
a. Give the state-transition-rate diagram of the process. b. What is the probability that only one lightbulb is working?
Goranson and Hall (1980) explain that the probability of detecting a crack in an airplane wing is the product of p1, the probability of inspecting a plane with a wing crack; p2, the probability of inspecting the detail in which the crack is locate..
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period.
What is the probability that the game will cut into the next show, that is, go past 5:00?- What is the probability of this occurring?
The net profit from a certain investment is normally distributed with a mean of $10,000 and a standard deviation of $5,000.
Thanksgiving spending, Part II. Exercise 4.12 provides a 95% confidence interval for the average spending by American adults during the six-day period after Thanksgiving 2009: ($80.31,$89.11).
I want to see two methods are the significantly same or not. Each methods has 5 variables are inside. so I would like to see each 5 variables from methods A and B are significantly the same and overall the two methods are significantly same or not..
Suppose that you want to test whether the population proportion of attorneys who make at least $400,000 per year differs from 0.24.
What fraction of all bags sold are underweight?- Some of the chips are sold in bargain packs of 3 bags. What's the probability that none of the 3 is underweight?
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