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During a natural gas shortage, a gas company randomly sampled residential gas meters in order to monitor daily gas consumption. On a particular day, a sample of 100 meters showed a sample mean of 250 cubic feet and a sample standard deviation of 50 cubic feet. Provide a 90% confidence interval estimate of the mean gas consumption for the population.
a machine is producing metal pieces that are cylindrical in shape. a sample of pieces is taken and the diameters are
Show that ( f dµ is well-defined and if ( 1 fn - g1 dµ → 0, then ( fn dµ converge to an element of S depending only on g, which will be called ( g dµ (Bochner integral).
According to the patient's history and physical examination. What are the chances of herniation if the MRI is positive?
Explain in detail what the optimum Neyman=Pearson test is for all values of the false alarm probability a in the open interval (0,1).
Find the expected value when you pick 4 and when you pick 5, betting $1 each time. Based on your results from parts a and b, are you better off picking 4 numbers or picking 5? Explain your reasoning.
The Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected.
use the following information to compute the answers. show your work.8 9 9 9 10 10 10 11 11 16 17 17 17 19 20 21 21 21
What is the confidence level? A sample of 45 eggs yields a mean of 1.37 ounces. Assume that the standard deviation is 0.53 ounces what is the margin of error at the 95% confidence level.
question a dam can be lowered by 4 meters using spillway a in 4 hours or by spillway b in 6 hours also lowering the
the time between arrivals of taxis at a busy intersection is exponentially distributed with a mean of 10 minutes.a what
last year a trial survey found that 65 of houses in morrisey township had a computer. a follow-up survey wants to find
Given that the student you choose is a senior, find out the probability of selecting a non-senior?
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