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Suppose the waiting time for the elevator in West Hall has a uniform distribution over the range of 0 to 80 seconds. Let Y be the random variable representing waiting time for the elevator. Sketch and upload the density function for the random variable Y. Be sure to label your axes and provide values on the axes.
Briefly describe your experiment. You must have a valid and ethical experiment (NOT an observational study) and/or question.
The sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the lower limit would be?
A window is in the shape of a square of side s, with a semicircle of diameter s above it. Write a function that expresses the total area of the window as a function of s.
Historically, it is known that the score has a Normal distribution and a standard deviation of 180. Set up the null hypothesis and the alternative hypothesis. Calculate the test statistic and find the p-value.
List the 15 possible samples (without replacement) of two artists that can be selected from the six. for brevity, use the initial provided.
A defective picture tube was discovered in the latest shipment. What is the probability that it came from Tyson Wholesale?
If a six appears for the third time, the turn of the player ends without moving the token. Determine the sample space of one such throw and determine the probability for each event.
For a candidate who guesses at all answers, find the mean and variance for the random variable X, the number of correct answers.
Determine the coefficient of determination R 2 . Determine standard error of the estimate s e .
According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes.
A researcher hypothesizes that parents with school-aged children are more likely to vote in favor of a referendum increasing public school construct a zero order school referendum attitude table by parenting status?
At the significance level 0.01 is there sufficient evidence to conclude that a difference exists in the mean time required for the elimination of the rash?
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