myopenmath.com The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1600 and the standard deviation is $75. 1375 1450 1525 1600 1675 1750 1825 Distribution of Prices What is the approximate percentage of buyers who paid between $1525 and $1600? What is the approximate percentage of buyers who paid between $1525 and $1675? % What is the approximate percentage of buyers who paid between $1375 and $1600? What is the approximate percentage of buyers who paid more than $1750? % What is the approximate percentage of buyers who paid less than $1375? Submit Question What is the approximate percentage of buyers who paid between $1450 and $1600? Question Help: Video 1 Video 2

The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. W Click the icon to view the pie chart. ..... 5-9 12 10-14 23 15-19 16 20-24 18 25-29 12 30+ 4 Find an approximation for the sample mean. x= 16.6 (Type an integer or decimal rounded to the nearest tenth as needed.) Find an approximation for the sample standard deviation. s= (Type an integer or decimal rounded to the nearest tenth as needed.)

(See photo)  The data set on the left represents the annual rate of return (in percent) of eight randomly sampled bond mutual funds, and the data set on the right represents the annual rate of return (in percent) of eight randomly sampled stock mutual funds. What proportion of the observations is within one standard deviation of the mean for each data set?