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1. The time of service of a certain desgin of hydraulic system equipment ranges between 100,000 and 350,000 hours, with each service life having a uniform probability of occurring.
(a) What is the probability density function?
(b) What is the probability that a certain equipment of this design lasts at least 200,000 hours?
(d) Calculate the mean and variance of this probability distribution.
A software company wants to determine whether there is a relationship between their three sales offices and the sales of their software products. The actual sales results are
a light fixture contains 2 light bulbs. the lifetime xi of each bulb is exponentially distributed with a mean of 200
An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and uploading riders more efficiently. Two alternative loading/unloading methods have been proposed.
1. If X, Y , and Z are uniform spaces, f is uniformly continuous from X into Y , and g is uniformly continuous from Y into Z , prove that g ? f is uniformly continuous from X into Z. 2. Prove that any uniformity has a base consisting of symmetr..
Calculate basic descriptive statistics and interpret their meaning in applLearning Outcomes - Explore and apply different levels of measurements, as well as understanding independent/dependent variables in research scenarios.
the port of south louisiana located 54 miles along the mississippi river between new orleans and baton rouge is the
In the following observational studies, describe changes that could be made to the data collection process that would result in an experiment rather than an observation study. Also, offer suggestions about unseen biases or lurking variables that m..
Can the college conclude that the students in the new program are significantly different from the freshman class? Use a two-tailed test with an alpha level of .05?
In a clinical study of an allergy drug, 108 of the 203 subjects reported experiencing significant relief from their symptoms. Using a significance level of .01, test the claim that more than half of all those using the drug experienced relief.
Determine the critical value and p value for one mean large sample test.
a.There is less than 7 beds per house in Compton; Decision in to reject the null hypothesis b. 30 % of Americans go to church on Sundays. Decision is not to reject the null hypothesis
determine the confidence level for each of the following large-sample one-sided confidence bounds.a upper bound x
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