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A new material is being tested for possible use in the brake shoes of automobiles. These shoes are expected to last for at least 75,000 miles. Fifteen sets of four of these experimental shoes are subjected to accelerated life testing. The random variable X, the number of shoes in each group of four that fail early, is assumed to be binomially distributed with n = 4 and p unknown. Find the maximum likelihood estimate for p based on these data:
1 0 1 0 2 1 0 1
0 1 0 0 0 1 0
If an early failure rate in excess of 10% is unacceptable from a business point of view, would you have some doubts concerning the use of this new material?
You wish to test the claim that µ = 800 at a level of significance of a = 0.05 and are given sample statistics = 810.
fitting of simple linear regression equation.given the student population for a school district over the past few years
Use the table or technology to answer each question. Include an appropriately labeled sketch of the Normal curve for each part.
Based on long term experience, the standard deviation can be taken to be $2.92. Find a 90% confidence interval for the average amount left by all groups.
Biology and Environmental Science In April 2013, Eddie ("Flathead Ed") Wilcoxson caught a flathead catfish that weighed 76.52 pounds on Bartlett Lake.
a certain species of fish has a weight which is normally distributed with mean u 2kg and standard deviation 0.3 kg.
Show all work, including justification for using the approximate model to find this probability. You may upload a picture as part of your supporting work if you wish.
Consider the following data on 20 chemical reactions, with Y = chromatographic retention time (seconds) and X = molecular weight (gm/mole).
The sample proportion who reported drinking alcohol frequently was 0.092. When this is the cutpoint for forming a classification table, sensitivity = 0.53 and specificity = 0.66. Explain what these mean.
Question 1: Which of the following items are considered Required Supplementary Information (RSI)?
the waiting times between a subway departure schedule and the arrival of a passenger are uniformly distrubted btween 0
A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean length of fish in the tank is 15 inches, and the standard deviation is 2 inches. A random sample of 36 fish is taken from the tank.
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