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A sprinkler manufacturer claims that the average activating temperatures is at least 134 degrees. To test this claim, you randomly select a sample of 32 systems and find the mean activation temperature to be 133 degrees. Assume the population standard deviation is 3.3 degrees. Find the standardized test statistic and the corresponding p-value.
a biology professor claimed that the proportions of grades in his classes are the same. a sample of 100 students showed
transrail is bidding on a project that it figures will cost 400000 to perform. using a 25 markup it will charge 500000
the data in the following table represent the total rates of return for three stock exchanges over the three-year
In a classical experiment, Gregor Mendel observed the shape and color of peas that resulted certain crossbreedings. A sample of 556 peas was studied with the result that 315 produced round yellow,
you want to develop a 90 confidence interval with a margin of error of 7. if the population standard deviation is 49
Do these simulated data provide evidence for us to conclude that a difference in the spinal canal cross sectional area exist between the population of subjects with disc hernination and a population of those who do not have disc hernation?
Four movies are randomly selected. Their lenghts were 110, 96, 125, and 136 minutes. Find a 95% confidence interval of the average of the lenghs of the movie.
Compute a point estimate for ρ. What are the upper and lower bounds for the 90% confidence interval for ρ (4 decimals)?
The standard deviation of a set of scores is 20. What will the standard deviation become if
Look ahead at the scenario described in Prob. 20.7-3. Notice the steady trend upward in the number of applications over the past three years-from 4,600 to 5,300 to 6,000.
In this economically challenging time, yours truly, CEO of the Outrageous Products Enterprise, would like to make extra money to support his frequent filet-mignon-and-double-lobster-tail dinner habit.
A system contains two components, A and B. The system will function so long as either A or B functions. The probability that A functions is 0.95, the probability that B functions is 0.90, and the probability that both function is 0.88. What is the..
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