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You are designing a freezer that requires the production R-134a with T=30 degrees C and a quality of 40%. The feed tmperature, to the throttle, is 30 degrees C. If the diameter of the tube existing the throttle is 1 cm, calculate the following:
a. Upstream diameter [for delta(v^2)=0].
b. Required upstream condition of the R-134a (pressure and state).
c. Pressure drop, delta(P), across the throttle.
the average annual age of doctors in a certain hospital is 44.0 years old with a standard deviation of 4.0 years.
Make three-month and four-month moving averages for this time series. Does the three-month or four month moving average provide the better forecast? Explain.
The Daytona Beach Tourism Commission is interested in the average amount of money a typical college student spends per day during Spring Break.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
ll subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data.
Calculate a 90% CI for the population proportion of Americans who believe there is intelligent life on other planets.
It would like to be plus or minus $10 of the true mean with a 98% confidence level. The standard deviation is thought to be $500. How many card holders should be sampled?
A pair of dice is rolled. The sum of the faces on top is observed. What are the expectation, variance, and standard deviation of the observed sum? The Expectation and Variance Template attached to the main posting is optional and recommended.
a teacher is interested in comparing the effects of three different types of rehearsal methods rote rehearsal imagery
Critically the difference between Paramaeter and Statistics and Critically discuss the concept of operationalize? What are focus groups
That will reveal the interval estimate for the proportion of people who like cats within a target population of 60,000 people. How would you interpret the results?
the amount spent worldwide in advertising on mobile devices can be estimated by fx 0.4x2 0.01x 0.9 where x is the
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