Question Help v A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 147.1 seconds. Assuming drive-through times are normally distributed with a standard deviation of 34 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 95 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 95 seconds is 0.0630 (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 205 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 205 seconds in the restaurant's drive-through is 0.0442. (Round to four decimal places as needed.) (c) What proportion of cars spend between 2 and 3 minutes in the restaurant's drive-through? The proportion of cars that spend between 2 and 3 minutes in the restaurant's drive-through is (Round to four decimal places as needed.)

Please help with the following question:   In the United States the ages 13 to 55+ of smartphone users approximately follow a normal distribution with approximate mean and standard deviation of 36.9 years and 13.9 years, respectively. Determine the probability that a random smartphone user in the age range 13 to 55+ is between 23 and 64.7 years old.

The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by a normal distribution with mean of 20.7 Ibs and a standard deviation of 4.2 Ibs. Find the probability that the population consumes at most 10 lbs yearly? Answer in a complete sentence in context.

A study found that student weights averaged 87.3lb with a SD = 4lb.   What is the 2-decimal % probability that an individual student will weight below 85 lb?   What is the 2-decimal % probability that a group of 35 students will have a mean weight of over 88 lb?