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Question: Suppose the time it takes a student to finish a quiz is uniformly distributed between six and 15 minutes, inclusive. Let X = the time, in minutes, it takes a student to finish a quiz. Then X ~ U (6, 15). Find the probability that a randomly selected student needs at least eight minutes to complete the quiz. Then find the probability that a different student needs at least eight minutes to finish the quiz given that she has already taken more than seven minutes.
A local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital. What size sample would be required to estimate the proportion of hospital referrals with a margin of error of 0.04 or less at 95% confiden..
1. In this table - identify the independent and dependent variable. 2. What is the purpose of a chi-square test? 3. What is the null hypothesis? 4. What are the degrees of freedom?
Mean 1400 grams and standard deviation 20 grams. Find positive numbers a and b such that Y=a+bX has a mean 0 and standard deviation.
Assume that there is no available information that can be used to estimate the percentage of households in which a vehicle is owned.
What is the Problem statement? What is the Distribution used and the values of its parameters.
If the campaign manager's claim is correct, what is the probability that the sample proportion would be no more than 0.49 for a sample of this size?
1.The Vintage Restaurant, on Captiva Island near Fort Myers, Florida, is owned and operated by Karen Payne.
What is the chi-square test statistic for H0? What are the degrees of freedom?
The sum of the squares error measures the variability in the measurements within the groups. Equal replication means that the same number of objects being observed are randomly selected from each population.
a standard deviation of 7.3 years. What is the 95% confidence interval estimate for the average number of years served by all Supreme Court justices?
If the prior on theta is uniform such that p(theta)=1, find an expression for the posterior distribution for theta after 10 trials. What is the maximum likelihood estimator of theta?
Bismuth (a) and cadmium (b) form a eutectic at 144°C and xa 5 0.45. They are also completely immiscible in the solid phase. The melting points for bismuth and cadmium are 271°C and 321°C, respectively. The enthalpies of fusion of these elements a..
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