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The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 43 ounces and a standard deviation of 11 ounces. Use the Standard Deviation Rule, also known as the Empirical Rule (see image below). Do not use normalcdf on your calculator. Suggestion: sketch the distribution in order to answer these questions. a) 68% of the widget weights lie between and b) What percentage of the widget weights lie between 21 and 54 ounces? c) What percentage of the widget weights lie below 76? 34% 34% 2.35% 13.5% 2.35% 0.15% 13.5% 0.15% 23 -

Score on last try: 0.5 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below Suppose that the speed at which cars go on the freeway is normally distributed with mean 68 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X - N( 68 8 om op b. If one car is randomly chosen, find the probability that it is traveling more than 64 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 67 and 70 mph. Round to 4 decimal places. Question Help: Written Example Message instructor Submit Question Jump to Answer

Score on last try: 0.5 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of 10. Suppose that one individual is randomly chosen. Let X-percent of fat calories. a. What is the distribution of X? X-N(36 10 O b. Find the probability that a randomly selected fat calorie percent is more than 43. Round to 4 decimal places. c. Find the minimum number for the lower quartile of fat calories. Round to 2 decimal places. Question Help: Written Example Message instructor Submit Question Jump to Answer

Question 19 About 4% of the population has a particular genetic mutation. 400 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 400. (If possible, round to 1 decimal place.) Question Help: Written Example Message instructor Submit Question Jump to Answer