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In a recent survey, 72% of the community favored building a health center in their neighborhood. If 14 citizens are chosen, find the probability that (A) exactly 10, (B) between 8 and 12, (C) at least 8, (D) at most 7 of them favor the building of the health center. (E) Compute the mean, variance, and standard deviation for the variable "favored building a health center."
What is a discrete and continuous random variable? What is an example of each variable? What are the similarities and differences between each variable?
Based on this sample information, create a 90% confidence interval for population mean yearly premium.
Suppose that this is a simple random sample of adult residents of Maine.
hamil sopa took a random sample of 60 invoices from his years records. the mean value of invoices in this sample was
How should she proceed? What additional data (if any) is needed? Which statistical analysis technique should be used? Can an analysis be performed? Why or why not?
Historically the average age of European soccer players is reported as 26 years with a standard deviation of 4 years. A random sample of 81 European professional soccer players has an average age of 27 years.
From past experience, a server at a restaurant knows that her tips follow a right-skewed distribution with mean $6 and standard deviation $4.
When testing for a difference between the means of a treatment and a placebo group, the computer display below is obtained. using a 0.05 significance level, is there sufficient evidence to support the claim that the treatment group (variable 1) co..
Determine Probability values based on discrete distribution.You roll a fair die three times.
Do you believe that the variance of sales before announcement of increasing price is equal to variance of sales after announcement?
calculate a 90 prediction interval for a randomely selcted single indivdual from the popultation. with a sample mean of
Compute the variance and standard deviation of the number that will arrive within two days.
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