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Question: A wire manufacturing company has inspectors to examine the wire for fractures as it comes out of a machine. The number of fractures is distributed in accordance with a Poisson process, having one fracture on the average for every 60 meters of wire. One day an inspector had to take an emergency phone call, so she left her post for a few minutes. Later on, she was informed that, while she was away from her post, 200 meters of wire was manufactured with three fractures. What is the probability that the consecutive fractures, among this portion of wire manufactured, were at least 60 meters apart? Hint: Let N (t) be the number of fractures in the first t meters of wire manufactured after the inspector left her post; $ N (t): t ≥ 0 % is a Poisson process with rate 60.
For a particular plant hybrid, the flowers of any given plant have a 75% chance of being red. (a) What is the probability that in 8 plants, exactly 6 have red flowers? Use your formulasheet and basic calculator functions only.
Find a 99% confidence interval for the true variance of window thickness for each window width category. Assume normality.
A coin is unbalanced such that it comes up tails 55% of the time. In an effort to prove that the coin is unfair, an experimenter flips the coin 50 times.
Express the null hypothesis and the alternative hypothesis in symbolic form. Carter Motor Company claims that its new sedan, the Libra
consider a virus that is spread by transfusions of blood contaminated by the virus a person receiving contaminated
Interpret a scatter diagram - Explain the relationship between the hours each student of a school spends in after school jobs each week and their grade average.
The growth in bad debt expense for Aptara Pvt. Ltd. Company over the last 20 years is as follows.
You may either make a boxplot with technology using the data at this text's website or make a sketch of the boxplot from the descriptive statistics below.
Does the gender of an individual influence their gpa scores? Null: Gender does not influence gpa scores. Alternative: Gender does influence GPA scores.
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
let x have normal distribution with mean 11.3 and standard deviation 5.7.find the cumulative probability of 9.31 or
Let G be the event that a girl is born. Let F be the event that a baby over 5 pounds is born. Characterize the union and the intersection of the two events.
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