Question 28 1 pts Ebooks follow a Normal distribution with an average price of $7.50 with a standard deviation of $1.75. Using the empirical rule to estimate, what percentage of ebook prices are between $7.50 and $9.25? Choose your answer from the following choices: l 59'9\" l V Question 29 1 pts Audiobook prices follow a Normal distribution with an average price of $24.00 with a standard deviation of $2.50. Using the empirical rule to estimate, what percentage of audiobooks prices are between $19.00 and $26.50 g? Choose your answer from the following choices: l 53'3\": l V Question 30 1 pts For a Normal distribution with a standard deviation of 20, it is found that 36% of observations are less than 130.33. What is the mean for the distribution? Answer to two decimal places. Question 31 1 pts Kendra and Elsa are competing in a 1km swimming race. Assume that Kendra's average time to complete this type of race is 28.4 minutes with standard deviation of 2.1 minutes, and that Elsa's average time is 30.8 with a standard deviation of 1.9 minutes. Assuming their race times are independent, what is the probability that Elsa will achieve a lower time and win the race? Answer as a probability (between 0 and 1} to four decimal places