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The average age of Amtrak passenger train cars is 19.4 years. If the distribution of ages is normal and 24% of the cars are olderthan 21.1 years, find the standard deviation.
the admissions staff asked graduates outside their immediate area and outside the state to help with recruiting. in
a) Set up the null and alternative hypotheses, and perform the hypothesis test. b) Does the jury selection system appear to be fair?
Iif we want to be 90% confident that the sample percentage is within (+/-) 3 % of the actual percentage of the accidents covered by the insurance company?
assume that we have two events a and b that are mutually exclusive. assume further that we know pa .30 and pb .40.a.
Compute variance, standard deviation, range, interquartile range, CV, and minimum and maximum Z scores. Are there any outliers? Explain.
Whats the most appropriate procedure for evaluating the relationship between tenure and divorce and what is the correlation and how can it be interpreted in terms of magnitude, direction and practical importance?
Draw the tree diagram for experiment and complete the table below that represents the probabilities for each of the values that the random variable X will asume.
The advertising agency promoting the new Keem dishwashing soap wants to get the best exposure possible for the product within the $100,000 advertising budget ceiling placed upon it.
Can you cite published examples for one or more countries or regions? Can you think of other cases where the expected probabilities do not quite agree with the empirical values based on relative frequency?
The users are then timed in their ability to setup and program the DVD by performing a series of operations. Which statistical analysis technique should be used? What is the null hypothesis? Can the market researcher get an answer? Why or why not?
You have just started own airline. You have one plane for a route connecting Austin, Boise, and Chicago. One route is Austin-Boise-Chicago and a second route is Chicago-Boise-Austin.
An electronic company is about to launch a new product.if the serial number for each piece produced has the following format:LLNNN where L stands for any letter in English and N is a number from 0 to 9,what is the name of the counting rules used t..
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