Find z0 such that P (– z0 < z < z0) = 0.76.
Answer to relevant QuestionsGraph by hand the standard normal distribution by using the formula derived in Exercise 57. Let π ≈ 3.14 and e ≈ 2.718. Use X values of – 2, – 1.5, – 1, – 0.5, 0, 0.5, 1, 1.5, and 2. (Use a calculator to compute ...The average teacher’s salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. a. What is the probability that a randomly ...The Old Farmer’s Almanac reports that the average person uses 123 gallons of water daily. If the standard deviation is 21 gallons, find the probability that the mean of a randomly selected sample of 15 people will be ...The average weekly income of information workers in private industry is $777. If the standard deviation is $77, what is the probability that a random sample of 50 information workers will earn, on average, more than $800 per ...The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume that commuting times are normally distributed and that the standard deviation is 6.1 minutes, what is the ...
Post your question