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With the recent changes in work habits due to the pandemic, a company took a survey of its employees. The survey found that 56% of its employees have invested in extra technology so they could work from home, that 61% of its employees enjoy working from home, and that 76% of its employees have invested in extra technology or enjoy working from home.
(a) Find the probability that an employee of the company has invested in extra technology and enjoys working from home
(b) What is the probability that an employee from the company enjoys working from home if it is known that they did not invest in extra technology? Use the values from setup in Question 1 (a).
(c) Are the events "The employee doesn't enjoy working from home" and "The employee invested in extra technology" independent? Support your answer with a calculation. Use the values from setup in Question 1 (a).
Conduct a hypothesis test to determine whether the whisper number justifies a conclusion of a statistically significant increase in the consensus estimate of economists. Use a = .01 as the level of significance.
When are you allowed to perform a one-sided test? What should you do if you are not sure if it is allowed?
Construct a 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter, and interpret the confidence interval
suppose we assume that the temperatures of healthy humans is approximately normal with a mean of 98.6 degrees and a
Here are the numbers of emails that I received in 12 consecutive workdays.
On March 4, 1990, the New York Times reported "Wine Equation Puts Some Noses Out of Joint." In this problem you will estimate an equation that predicts.
Consider an economy consisting of some firms with flexible prices and some with rigid prices. Let pf denote the price set by a representative flexible-price.
Find the expected value of the proposition. Round your answer to two decimal places. Losses must be expressed as negative values.
On Halloween, Deft and several of his college friends are on their way to a party, dressed as skeletons.
She then reports this average (mean) amount of debt among these students as the average of all college students. What type of sample of this?
a. For what output range would A be preferred? b. For what output range would B be preferred?
Modify the program ErgodicChain so that you can compute the basic quan- tities for the queueing example of Exercise 11.3.20. Interpret the mean recur- rence time for state 0.
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