Telephone Answering Devices Seventy-eight percent of U.S. homes have a telephone answering device. In a random sample of 250 homes, what is the probability that fewer than 50 do not have a telephone answering device?

Sergio Gonzalez Week 3 STATS 241 Chapter 3 Pt 2 Coefficient of variationmeasures the spread of data relative to the mean of the data used to compare variables with different mean,SD’s, and units Zscoremeasures the number of standard deviations a given data value is away from mean of data set and can be negative Ex: Mean1602 SD5000 value1810 18101602/500=...