A random sample of 12 ounce milkshakes from 13 fast food restaurants had a follow in number of calories. 591, 472, 510, 580, 613, 375, 700, 642, 473, 608, 450, 476, 504. Assume the population standard deviation is 92. Question: explain why it is necessary to check whether the population is approximately normal before constructing a confidence interval. Question:

A random sample of 12 ounce milkshakes from 13 fast food restaurants had a follow in number of calories. 591, 472, 510, 580, 613, 375, 700, 642, 473, 608, 450, 476, 504. Assume the population standard deviation is 92. Question: explain why it is necessary to check whether the population is approximately normal before constructing a confidence interval. Question:

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

A data set consists of the 11 data points shown below, plus one additional data point. When the additional point is included in the data set, the sample standard deviation of the 12 points is computed to be 15.225. If it is known that the additional data point is 25 or less, find the value of the twelfth data point. 48, 42, 12, 56, 33, 23, 24, 21, 37, 21, 27 Value of the additional data point =
Suppose that textbook weights are normally distributed. You measure 28 textbooks' weights, and find they have a mean weight of 73 ounces. Assume the population standard deviation is 10.9 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Round answers to 2 decimal places. Select an answer
You measure 37 textbooks' weights, and find they have a mean weight of 71 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight.
A sample of 22 public high school students spent an average of 7 hours studying per week. Assuming the distribution of hours spent studying is normally distributed. Find a 95% confidence interval for the mean number of hours spent studying by public high school students.? Assume the standard deviation is 1.3 hours.
The standard deviation of quiz scores in Math 22 of EE courses is 8.6. A professor believes this value to be less. He samples 20 quiz scores and finds that the standard deviation is 6.9. Does this sample provide enough evidence to suggest that the true standard deviation is less than 8.6?
You measure 48 textbooks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 8.3 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places AFW
five samples of 15 minerals are taken from a population. The sample means for hardness of the minerals are 6.5, seven, seven, 6.5, and six. The standard deviation for the mineral is .745. Find the meaning of the sample means and the standard deviation of the sample means for the hardness
A group of 49 randomly selected students has a mean age of 22.4 years. Assume the population standard deviation is 3.8. Construct a 90% confidence interval for the population mean. Include a statement interpreting your answer.
The average income for a county in Texas is reported in a study. The margin of error is 767.42. Use a confidence interval of 95%. What is the approximate standard deviation of the sample assuming n = 45? O 4,598.04 O 8,315.63 O 2,574.36 O 2,626.54
The National Center for Education Statistics surveyed 4400 college graduates about the lengths of time required to earn their bachelor's degrees. The mean is 5.15 years, and the standard deviation is 1.68 years. Based enthuse sample data, construct the 99% confidence interval for the mean time required by all college graduates. left left: right:
You measure 38 textbooks' weights, and find they have a mean weight of 58 ounces. Assume the population standard deviation is 3.9 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight .
At a college, the mean height of women is 64 inches with the standard deviation of 5 inches. What is the z-score for a height of 59? What is the z-score for a height of 74? What is the height of a woman with a z-score of 3? Submit Question