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The mean IQ score of adults is 100, with a standard deviation of 15. Use the Empirical Rule to find the percentage of adults with scores between 70 and 130. (Assume the data set has a bell-shaped distribution.) Please show work explain how you got answer.
q1. an fbo a fixed-base-operator usually the manager of a small-town airport makes his revenue in three ways flight
The cell phone industry is growing at a rapid pace. Current estimates suggest that 60% of people have cell phones. Suppose 25 people were randomly and independently sampled.
Suppose the federal government proposes to give a substantial tax break to automakers producing midsize cars that get a mean mileage exceeding 31 mpg.
A recent article in Vitality magazine reported that the mean amount of leisure time per week for American men is 40.0 hours. You believe this figure is too large and decide to conduct your own test.
The unlikelihood of everyone who plays the lottery choosing a correct 6 would be very large indeed. Is this unethical advertising? Is it misleading? is the lottery in general, unethical? Why or why not?
astronomers estimate that as many as 100 billion stars in the milky way galaxy may be encircled by planets. let p
Classifcation Which of the following are continuous variables and which are discrete?
anna sheehan is the manager of the spend wise supermarket chain. she would like to be able to predict paperback book
There used to be an ad on TV that claimed one toothpaste was proven to be more effective in fighting tooth decay than another. One of statistics professors was interested in the study, and after 6 ads finally got the address to write away for it f..
If an apartment is selected at random, what is the probability that it is not a 2 bedroom apartment on the 2nd floor?
question a student is taking two courses history and math.nbsp the probability the student will pass the history
Assuming that the variability is unchanged (i.e., σ = 6), is there sufficient evidence to suggest that the strength of the product has increased at the 1% level of significance?
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