2. Suppose that the mean retail price per gallon of regular grade gasoline in the United States is$3.43 with a standard deviation of $0.10 and that the retail price per gallon has a bell-shapeddistribution (again, refer to Figure 3.5 on p. 133 in the textbook for a bell-shaped distribution).a What percentage of regular grade gasoline sold between $3.33 and $3.53 per gallon?b. What percentage of regular grade gasoline sold between $3.33 and $3.63 per gallon?What percentage of regular grade gasoline sold for more than $3.63 per gallon?C.

Mean()=$3.43Standard deviation()=$0.10

Answered: 2. Suppose that the mean retail price…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

40. Although there is some controversy around the precise average body temperature of adults, new data suggest that the mean is 98.2° with a standard deviation of 0.6° and has a bell-shaped distribution. a. According to this distribution, approximately what percentage of body temperatures are between 97° and 99.4°? b. Approximately what percentage of temperatures are greater than 98.8°? c. Approximately what percentage of temperatures are no more than 98.2°?
1. Suppose that the amount of time takes place the Bureau of Internal Revenue (BIR) to send refunds to taxpayers is normally distributed with a mean of 15 weeks and a standard deviation of 4 weeks. a. What proportion of taxpayers should get a refund within 7 weeks? b. How long will it take before 67% of taxpayers get their refund? 2. The average price of a kilogram of ham is ₱1,200. Assume that the standard deviation is ₱140. It a random sample of 30 one-kilogram packages is selected, find the probability that the mean sample will be less than ₱1,170.
A statement as to the approximate amount of area under a normal curve that is found between +/- 1, +/- 2, and +/- 3 standard deviations from the mean is known as the: Group of answer choices a. rule of proportions b. distribution division statement c. rule of percentages d. 1-2-3 rule
2. The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43. The standard deviation is $0.09. The average price of a sample of 16 low-calorie frozen desserts is $1.03. The standard deviation is $0.10. At a = 0.05, is the price of salad dressings significantly higher than the price of frozen desserts?
1) The average amount of rainfall in Puerto Rico during the past month was 3.5 inches, according to the National Meteorology Center. Suppose that a normal distribution can be used and that the standard deviation is 0.8 inches. to. What percentage of the time last month's rainfall was greater than 4 inches? b. What percentage of the time was the rainfall less than 3 inches? c. A month is considered extremely wet if the rainfall is 10% higher for that month. How much rainfall must be in April for it to be considered an extremely wet month?
1. Draw by hand or in Excel fully labelled curves on a common scale to represent two sets of scores where:a.Mean = 25, Standard Deviation = 4,Mean = 50, Standard Deviation = 4.b.Mean = 50, Standard Deviation = 2,Mean = 50, Standard Deviation = 5.
2. Human body temperatures are normally distributed with a mean of 98.20°F and a standard deviation of .62F °. Find the temperature that separates the top 7% from the bottom 93%. Round to the nearest hundredth of a degree.
2. The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222milligrams per deciliter (mg/dl) and standard deviation 37 mg/dl. A random sample of 58individuals will be collected and the sample mean cholesterol level will be computed. a. What is the mean of the sample mean? b. What is the standard deviation of the sample mean?
The weights for newborn babies is approximately normally distributed with a mean of 6.5 pounds and a standard deviation of 1.3 pounds.Consider a group of 1400 newborn babies:1. How many would you expect to weigh between 3 and 8 pounds? 2. How many would you expect to weigh less than 6 pounds? 3. How many would you expect to weigh more than 4 pounds? 4. How many would you expect to weigh between 6.5 and 10 pounds?
A team of ten (10) construction workers who are working on a project are classified according to the skill levels, Classes A to D. The table below shows the number of workers in each of the four (4) classes and their respective hourly pay-rate. Pay-rate (Rands/hour) Number of workers Class A 80 Class B 60 Class C 55 Class D 50 4. Calculate the mean hourly pay-rate for the 10 workers. A. R24.50/hour B. R57/hour C. R57.50/hour D. R61.75/hour
Calculate following?
2. The scores from a state standardized test have a mean of 200 and a standard deviation of 50. The distribution of the scores is roughly bell shaped. The percentage of scores that lie between 100 and 300 is approximately a. 34% b. 47.5% c. 50% d. 68% e. 95%

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS