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10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
What is the probability that the sum of their scores exceeds 1200 and probability that the average of the scores of all 400 student
Note that under the exponential assumption, P(X>t) = exp(-t/theta). If t=5, use the result from (a) to find an approximate one-sided lower 95% confidence limit for theta.
Create the estimated regression equation by calculating the values of b 0 and b 1
Event A occurs with probability 0.2. Event B occurs with probability 0.3. Event C occurs with probability 0.4. If A, B, and C are disjoint, then
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30. (a) What is the probability that all the hotel's room will be rented?
We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of 20 observations having a sample mean of 8 and a sample standard deviation of 2. What is the standard error?
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
Which of the following is the correct set of probabilities for X and if a student is selected at random, the probability he or she is either a Junior or a Senior
At.01 significance level, is there difference in mean number of times men and women order take-out dinners in month? Determine the p -value?
Impact on sampling of increasing sample size is: The potential for extreme sampling error is reduced.
Utilizing a binominal experiment, that is each trail can be reduced to two outcomes, construct a binomial distribution.
Determine the p-value, and at 95% confidence, test the hypotheses.
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