The number of pizzas consumed per month by university students is normally distributed with a mean of 10 and a standard deviation of 3.A. What proportion of students consume more than 12 pizzas per month?Probability=B. What is the probability that in a random sample of size 9, a total of more than 99 pizzas are consumed?Probability=

Answered: The number of pizzas consumed per month…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The weight of 2,000 students are normally distributed with the mean of 46kg and standard deviation of 2.5kg.a. How many students are less than 45 kg?b. How many students are heavier than 51.85kg?c. If a student from this group is randomly selected, what is the probability that he/she/they weight between 44kg to 49kg?
The annual per capita consumption of bottled water was 33.5 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with a mean of 33.5 and a standard deviation of 10 gallons. a. What is the probability that someone consumed more than 34 gallons of bottled water? b. What is the probability that someone consumed between 20 and 30 gallons of bottled water? c. What is the probability that someone consumed less than 20 gallons of bottled water? d. 97.5% of people consumed less than how many gallons of bottled water? a. The probability that someone consumed more than 34 gallons of bottled water is 0.2747 (Round to four decimal places as needed.) C----
The annual per capita consumption of bottled water was 30.5 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with a mean of 30.5 and a standard deviation of 13 gallons. a. What is the probability that someone consumed more than 36 gallons of bottled water? b. What is the probability that someone consumed between 30 and 40 gallons of bottled water? c. What is the probability that someone consumed less than 30 gallons of bottled water? d. 99.5% of people consumed less than how many gallons of bottled water? Instructor tip - X a. The probability that someone consumed more than 36 gallons of bottled water is 0.3361 (Round to four decimal places as needed.) b. The probability that someone consumed between 30 and 40 gallons of bottled water is 0.2829 (Round to four decimal places as needed.) Use Excel functions or the normal probability applet: https://davidmlane.com/hyperstat/z_table.html c. The probability that someone consumed less…
4. The delivery time for all food orders at a fast food restaurant have a mean of 6.7 minutes and a standard deviation of 2.1 minutes. a. Assume a normal distribution and compute the probability that an order is delivered in less than 6 minutes. prob = b. Find the probability that the mean of 40 orders is less than 6 minutes. prob = c. Find the probability that serving 40 orders takes less than a total of 4.5 hours. prob = %3D
The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting307days or longer. b. If the length of pregnancy is in the lowest33%,then the baby is premature. Find the length that separates premature babies from those who are not premature
The lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days longer. b. If the length of pregnancy is in the lowest 2%then the baby is premature. Find the length that separates premature babies from those who are not Premature
The number of pizzas consumed per month by university students is normally distributed with a mean of 13 and a standard deviation of 2. Use Excel to answer the following questions: A. What proportion of students consume more than 15 pizzas per month? Probability = B. What is the probability that in a random sample of size 8, a total of more than 96 pizzas are consumed? (Hint: What is the mean number of pizzas consumed by the sample of 8 students?) Probability =
Five hundred children participated in a field demonstration. Their heights averaged 110cm with a standard deviation of 6 cm.2.1 What is the probability that a child, picked at random, has a height greater than 116 cm? 2.2 What is the probability that the height of a child, picked at random, is less than 104 cm? 1.3 How many children belong to the upper 15% of the group?
The annual per capita consumption of bottled water was 30.8 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with a mean of 30.8 and a standard deviation of 13 gallons. a. What is the probability that someone consumed more than 41 gallons of bottled water? b. What is the probability that someone consumed between 25 and 35 gallons of bottled water? c. What is the probability that someone consumed less than 25 gallons of bottled water? d. 99.5% of people consumed less than how many gallons of bottled water? a. The probability that someone consumed more than 41 gallons of bottled water is (Round to four decimal places as needed.) b. The probability that someone consumed between 25 and 35 gallons of bottled water is (Round to four decimal places as needed.) c. The probability that someone consumed less than 25 gallons of bottled water is (Round to four decimal places as needed.) d. 99.5% of people consumed less than (Round to two…
What is the probability that a domestic airfare is $400 or more? What would be the maximum cost of a ticket, if it is in the lower 3% of the distribution of domestic airfares?
do a , b, c
Cans of regular Coke are labeled as containing 12 oz. Statistics students weighed the contents of 8 randomly chosen cans, and found the mean weight to be 12.13 ounces. Assume that cans of Coke are filled so that the actual amounts are normally distributed with a mean of 12.00 oz and a standard deviation of 0.11 oz. Find the probability that a sample of 8 cans will have a mean amount of at least 12.13 oz.

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