When mrs. myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. about 68% of her students scored between which two scores?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

How do you solve a question like this?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)