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Consider a normal population with a mean of 10 and a variance of 4. Find P(X >=10).
a proportion of a college basketball teams season ticket holders renew their tickets for the next season. let p denote
If you draw one ball from the urn what is the probability that it is blue or white?
Construct a 95% confidence interval for the mean amount of oil recovered from all wells in this area using t procedures - How does the t interval that you constructed compare with this interval? Should the t procedures be used with this data?
A doctor suspected that smokers between 40 and 50 with lung disease had been smoking on average more than 20 years - significance level is there sufficient evidence to justify the doctors belief?
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
a regression equation was fit to a set of data for which the correlation r between x and y was 0.6. which of the
you preform an anova on eighteen subjects divided evenly into three groups according to age. reading speed is measured
In healthy adults, x is approximately normally distributed with mean µ = 38 and standard deviation σ = 12. What is the probability that:
the image of the public library is constantly changing and their online services continue to grow. usage of the
Simple random sample from the students in the university. Find the probability that the average number of study hours for this group is between 21 and 23 hours.
Which is more likely to occur-more than 60% correct identifications in the sample of 200 or more than 55% correct identifications in a sample of 1,000? Explain.
Find the probability of correctly answering the first 2 questions on a multiple choice test if random guesses are made and each question has 3 possible answers.
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