2. A large appliance company estimates that the variance of the life of its appliances is 3. You work for a consumer advocacy group and are asked to test the claim at a = 0.05.
You find that the sample of the lives of 27 appliances has a variance of 2.8.

What percent of the circle below is shaded?

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?