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In a race of 10 sailboats, the finishing times of all boats are iid Gaussian random variables with expected value 35 minutes and standard deviation 5 minutes.
(a) What is the probability that the winning boat will finish the race in less than 25 minutes?
(b) What is the probability that the last boat will cross the finish line in more than 50 minutes?
(c) Given this model, what is the probability that a boat will finish before it starts (negative finishing time)?
What is the value of the sample test statistic? (Round your answer to three decimal places.) Find theP-value. (Round your answer to four decimal places.)
1. Researchers tested farm-raised salmon from two different farms for organic contaminants. One measure they collected was the concentration of the carcinogenic insecticide mirex (parts per million).
What score was earned by more students than any other score? Why? What was the highest score earned on the exam?
The business estimates the true population standard devuation is around $2,400.If yhe confidence level is 90%, find the required sample size in order to meet the desired accuracy.
data are collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients.
Calculate basic descriptive statistics and interpret their meaning in applLearning Outcomes - Explore and apply different levels of measurements, as well as understanding independent/dependent variables in research scenarios.
This problem relates to Basic Statistics and it is about calculate the mean of moviegoers and concluding whether or not the sample can represent the entire population. This has been described in the solution with calculation
given the following data on seven seas sales type of boat observed sales expected sales expected observedpirates
The citizens of a certain community were asked to choose their favorite pet.
for a certain type of electronic component the lifetime x in thousands of hours has an exponential distribution with
Suppose that n trials of a binomial experiment result in no successes.
Let Y be the number of times the drawing pin points downward in the latter series of throws. Find the distribution of Y (cf. Problem 3.8.31).
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