What's your favorite ice cream flavor? For people who buy ice cream, the all-time favorite is still vanilla. About 30% o

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What S Your Favorite Ice Cream Flavor For People Who Buy Ice Cream The All Time Favorite Is Still Vanilla About 30 O 1 (43.17 KiB) Viewed 54 times

What's your favorite ice cream flavor? For people who buy ice cream, the all-time favorite is still vanilla. About 30% of ice cream sales are vanilla. Chocolate accounts for only 9% of ice cream sales. Suppose that 184 customers go to a grocery store in Cheyenne, Wyoming, today to buy ice cream. (Round your answers to four decimal places.) LA USE SALT (a) What is the probability that 50 or more will buy vanilla? 08212 (b) What is the probability that 12 or more will buy chocolate? (c) A customer who buys ice cream is not limited to one container or one flavor. What is the probability that someone who is buying ice cream will buy chocolate or vanilla? Hint: Chocolate flavor and vanilla flavor are not mutually exclusive events. Assume that the choice to buy one flavor is independent of the choice to buy another flavor. Then use the multiplication rule for independent events, together with the addition rule for events that are not mutually exclusive, to compute the requested probability. 0.363 (d) What is the probability that between 50 and 60 customers will buy chocolate or vanilla ice cream? Hint: Use the probability of success computed in part (c). 0.1441 Need Help? Read It 11. [3.22/4.6 Points] DETAILS MY NOTES ASK YOUR TEACHER Suppose we have a binomial experiment in which success is defined to be a particular quality or attribute that interests us. (a) Suppose n = 30 and p = 0.25. Can we approximate p by a normal distribution? Why? (Use 2 decimal places) np- ng= Yes both np and nq exceed can PREVIOUS ANSWERS Yes both np and no exceed PRACTICE ANOTHER What are the values of , and ? (Use 3 decimal places.) x be approximated by a normal random variable because (b) Supposen 25 and p= 0.15. Can we safely approximate à by a normal distribution? Why or why not? No cannot be approximated by a normal random variable because no does not exceed BBUNDERSTAT12 6.6.020. (c) Supposen - 50 and p = 0.11. Can we approximate by a normal distribution? Why? (Use 2 decimal places) np 5.5 ng 44.5 What are the values of , and e? (Use 3 decimal places.) M₂5.5 X 2.2125 be approximated by a normal random variable because