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A web based software company is interested in estimating the proportion of individuals who use the Firefox browser. In a sample of 200 of individuals, 37 users stated that they used Firefox. Using this data, construct a 99% confidence interval for the proportion of all individuals that use Firefox.
What is the lower limit on the 99% confidence interval? Give your answer to three decimal places.
What is the upper limit on the 99% confidence interval? Give your answer to three decimal places.
If you hadn't already taken the sample listed above, what sample size would be required so that the width of the 99% confidence interval would be at most 0.03 units wide? Be as conservative as possible with your answer!
suppose that fty-two percent of the residents of the city eugene think that arizona will defeat oregon in their next
a player of a video gameis is confronted with a series of four opponents and an 80 probability of defeating each
What do we mean by confidence intervals - provide an example that illustrates your answer. Suppose we were to apply 95% and 99% confidence to your study results.. how might your result differ and why?
Normally distributed with a mean of 52 and a standard deviation of 3. What is the probability that the MPG for a selected mid-size car would be greater than or equal to 50.
Determine the number of successes suggested by the given statement.
What are the four levels of measurement scales? Give examples of each and explain in detail. Explain the use of normal probability plot to evaluate whether a set of data is normally distributed? Please discuss in detail.
a national survey is conducted to assess the association between hypertension and stroke in persons over 75 years of
the discrete random variable x is the number of students that show up for professor smiths office hours on monday
Now assume that failed items are not replaced during the test. UsingHandbook H--108, determine the plan assuming the time to failure is exponential.
How would you respond if someone told you that the correlation between education level and salary was 1.27?
A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and = 0.01. What are the critical values?
the manager of a manufacturing company believes that experience is the most valuable variable in determining a workers
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