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Question: Repeat Problems I and II assuming that the distribution of the lengths is exponential.
Problems II: A random rectangle has sides the lengths of which are independent uniform random variables. Find the expected area of the rectangle, and compare this result to that of Problem I.
Problem I: A random square has a side length that is a uniform [0, 1] random variable. Find the expected area of the square.
We randomly pick 100 students. Let represent the proportion of students in this sample who wear contacts. What's the appropriate model for the distribution of?
Find the reliability of bulb after 20 hours - Given that it lasts 20 hours, find the probability that the bulb lasts another 20 hours.
A 56-question multiple choice test has 4 possible answers for each question and a student chooses the answers to each problem at random. A student selects 16 correct answers.
Probabilities can be approximated by the normal probability distribution? Explain What is the probability of between 100 and 110 successes? What is the probability of 130 or more succeses?
Use the normal approximation of the binomial probability distribution to find the interval that contains 95.44% of that distribution.
Describe the process of acceptance sampling. What types of sampling plans are there? What is acceptance sampling used for? Describe the concept of six-sigma quality. Why is such a high quality level important?
Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
Consider the roll of a pair of dice, and let X denote the sum of the two numbers appearing on the dice.- Find the probability distribution of X, and find the cumulative distribution function. What is the most likely sum?
In a recent study of 86 working adults, the mean number of hours per week spent talking on the phone was 21.6. The sd= 5.7 hours.
calculate a regression line to predict weight from height for these data from sophomore women.height inches weight
Despite any problems it might have, summarize how you would justify using Student's t-test to compare two independent groups.
compute the coefficient of determination. round your answer to four decimal places. a regression equation is obtained
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