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The number of Btu's of petroleum and petroleum products used per person in the United States in 1975 was normally distributed with mean 153 million Btu and standard deviation 25 million Btu. Approximately what percentage of the population used between 128 and 178 million Btu during that year? Approrimate\ what percentage of the population used in excess of 228 million Btu?
It is estimated that 88% of senior citizens suffer from sleep disorders and 8% suffer from anxiety. Moreover, 6% of senior citizens suffer from both sleep disorders and anxiety.
The euro. Shortly after the introduction of the euro coin in Belgium, newspapers around the world published articles claiming the coin is biased.
Is there any evidence to suggest the proportion of rent-controlled apartments is less than 10%? Let a = 0.05, and use the p value associated with this hypothesis test to draw a conclusion.
The stationary PMD and mean of x(t) and the system stability conditions. The mean system time of a customer. Assuming that, after user U becomes active.
why is the t-test more widely useful for hypothesis testing compared to a
These included 26,000 deaths from tuberculosis (TB) in 100,000 people who became sick with tuberculosis in 2005.
A pharmaceutical company has developed a screening test for a rare disease that afflicted 2% of the population. Unfortunately, the reliability of this test is only 80%, which means that 20% of the tested will get a false positive.
Given a list of words and the empirical probabilities they occur in spam e-mails and in e-mails that are not spam.
A product goes through 20 independent operations. For each operation, the first-pass yield is 95%. What is the rolled throughput yield for the process?
Shamrock Oil has some revised information concerning the accuracy of the geological test probabilities. According to this new information.
testing for equality of variances.independent random samples were taken from normal distributions of the yearly
steam at 15 mpa and 480 c enters a turbine operating at steady state with a volumetric flow rate of 800 m3min. eighteen
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