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Suppose X is a normal random variable with mean 10 and standard deviation 2.
A) Find P(7<=X<=13)
b) Find the value of c if P (X<=c)= 0.8729
let x be a continuous random variable whose probability density function isfxx3 4for an interval 0 lt x lt c.what is
Test the null hypothesis that a population mean is 50 against the alternate hypothesis that the mean is not 50. What "model" should be used and why?
An environmentalist estimate that the mean waste recycle by adults in the country is more than 1 pound per person per day. You want to test this claim, you find that the mean waste recycled per person per day for a random sample of adults in the c..
What is the probability that between 42 and 47 (inclusive) consider the availability of company-sponsored training as a factor to weigh in taking a job?
there are 1000 students in the senior class at a certain high school. the high school offers two advanced placement
During recent seasons, Major League Baseball has been criticized for the length of the games. A report indicated that the average game lasts 3 hours and 30 minutes.
q. which of the following is not an assumption that must be met for the least squares estimations to be valid? why?a
Each publisher breaks down their subscriber base into a number of groups based on demographics and location. These data are shown in the table below:
A nationwide coffee chain is downsizing its branches in six states. It has already told the store managers in five of the six states the amount of downsizing
Basket contain 2 white balls, 5 yellow balls and 3 balls consider selecting one ball at a time from the basket.
Perform a significance test to see if there is a relation between mortality and duration of employment in the group hired AFTER 1945 and report a p-value.
The following data are the number of persons who were waiting in line at a checkout counter at 100 randomly selected times during the week.- At the 0.05 level, test whether the population of these values could be Poisson distributed.
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