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The time to failure of a nickel-cadmium battery is Weibull-distributed with parameters v=0 α = 1/2 years and β = 1/4
(a) Find the fraction of batteries that are expected to fail prior to 1.5 years.(b) What fraction of batteries are expected to last longer that the mean life?(c) What fraction of batteries are expected to fail between 1.5 and 2.5 years
Use the mixed congruential method to generate a sequence of three two digit-random integers and corresponding random numbers with Xo = 37, a = 7, c = 29, and m = 100.
A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selected a distribution, what value will be exceeded 10% of the time?
Mr. Connors philosophy class has 99 students, classified by academic year and gender, as illustrated in the table below. Mr. Connor randomly chooses one student to collect yesterday's work. What is the probability that he selects a male, given tha..
Females aged 50 and over are approximately normally distributed with a mean of 250 mg/dL and a standard deviation of 30 mg/dL. What is Mrs. Brown's cholesterol level?
A jar contains 2 black marbles and 8 white marbles. If you randomly pick 2 marbles without replacement, what is the probability that you get one marble of each color?
Determine the pairs which are significant according to LSD and what pairs are important according to Bonferroni?
Two independent samples of sizes n1 = 50 and n2 = 50 are randomly selected from two populations to test the difference between the population means. The sampling distribution of the sample mean difference, is:
A game involving a pair of dice pays you 3 with probability 17/36, costs you 2 with probability 14/36, and costs you 4 with probability 5/36. What is your probability of losing money in one play of the game?
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
Regression and Correlation are two of the most often used and abused tools in research. People are quick to jump to conclusions that if a relationship exists between two variables, then one must cause (causation) the other.
Draw and label distribution used and position of values found.
Reccomend asprin for their patients with children Conduct a hypothesis test using the P-Value method. What conclusions would you make when a=o.2 and a=0.02.
What is overall mean and standard deviation of the test scores? Sketch the distribution and show where you are and where your friend is?
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