what percent of data values are within one standard deviation of the mean?

O b. symmetric O c. skewed to the left O d. bimodal QUESTION 4 4) The class boundaries for the class 20-26 is: O a. 19.5-26.5 O b. 19.5-25.5 O c. 20.5-26.5 O d. 20.5-25.5 QUESTION 5 5) Given the following data set : 42, 30, 24, 48, 36, 60, 54, 62, 18, 15, 13 What percent of data values are within one standard deviation of the mean? (Round to the nearest tenth & use population standard deviation) O a. 99.7% O b. 54.4% O c. 68% O d. 45.5%