Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 12 typical one-hour massage therapy sessions showed an average charge of $56. The population standard deviation for a one-hour session is a = $5.5. (a) What assumptions about the population should we be willing to make if a margin of error is desired? O We should be willing to make the assumption that the population is at least approximately skewed left. O We should be willing to make the assumption that the population is at least approximately normal. O We should be willing to make the assumption that the population is at least approximately uniform. O We should be willing to make the assumption that the population is at least approximately bimodal. O We should be willing to make the assumption that the population is at least approximately skewed right. (b) Using 95% confidence, what is the margin of error in dollars? (Round your answer to the nearest cent.) %24 (c) Using 99% confidence, what is the margin of error in dollars? (Round your answer to the nearest cent.) 2$

Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 12 typical one-hour massage therapy sessions showed an average charge of $56. The population standard deviation for a one-hour session is a = $5.5. (a) What assumptions about the population should we be willing to make if a margin of error is desired? O We should be willing to make the assumption that the population is at least approximately skewed left. O We should be willing to make the assumption that the population is at least approximately normal. O We should be willing to make the assumption that the population is at least approximately uniform. O We should be willing to make the assumption that the population is at least approximately bimodal. O We should be willing to make the assumption that the population is at least approximately skewed right. (b) Using 95% confidence, what is the margin of error in dollars? (Round your answer to the nearest cent.) %24 (c) Using 99% confidence, what is the margin of error in dollars? (Round your answer to the nearest cent.) 2$

Name: Studies show that massage therapy has a variety of health benefits an
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 12 typical one-hour massage therapy sessions showed anaverage charge of $56. The population standard deviation for a one-hour session is o =

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

The wall street journal reported on several studies that show massage therapy has a variety of health benefits and it is not too expensive. A sample of 10 typical one-hour massage therapy sessions showed an average charge of $59. The sample standard deviation for one hour session is standard deviation of 5.50. A. What assumptions about the population should we be willing to make if a margin of error is desired? We assume the population distribution is normal. We assume normal distribution for the population. B. Using 95% confidence, what is the margin of error? C. Using 99% confident, what is the margin of error?
A quantitative data set has a size 50. At least how many observations lie within 3standard deviations to either side of the mean?
The regression line for a set of data will have little meaning unless: Select one: a. the correlation coefficient is significant. b. the slope of the regression line is zero. c. the standard deviation of errors is zero. d. there are at least 30 data points chosen.
Solar energy is considered by many to be the energy of the future. A recent survey was taken to compare the cost of solar energy to the cost of gas or electric energy. Results of the survey revealed that the distribution of the amount of the monthly utility bill of a three-bedroom house using gas or electric energy had a mean of $117 and a standard deviation of $13. If the distribution can be considered normal: Approximately what percentage of homes will have a monthly utility bill less than $78? Note: Do NOT include the "%" sign Do NOT round any decimals, if applicable
In nutrition, the recommended daily allowance of vitamins is a number set by the government to guide an individual's daily vitamin intake. Actually, vitamin needs vary drastically from person to person, but the needs are closely approximated by a normal curve. To calculate the recommended daily allowance, the government first finds the standard deviation and the average need for vitamins among people in the population. The recommended daily allowance is then defined as the mean plus 2.7 times the standard deviation. What fraction of the population will receive adequate amounts of vitamins under this plan? Click here to see page 1 of the table for areas under the standard normal curve. Click here to see page 2 of the table for areas under the standard normal curve. The fraction of the population that will receive adequate amounts of vitamins under the given plan is (Type an integer or decimal rounded to the nearest thousandth as needed.)
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
You may need to use the appropriate appendix table or technology to answer this question. Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 11 typical one-hour massage therapy sessions showed an average charge of $54. The population standard deviation for a one-hour session is o = $7.5. (a) What assumptions about the population should we be willing to make if a margin of error is desired? O we should be willing to make the assumption that the population is at least approximately skewed right. O we should be willing to make the assumption that the population is at least approximately normal. O we should be willing to make the assumption that the population is at least approximately bimodal. O we should be willing to make the assumption that the population is at least approximately uniform. O we should be willing to make the assumption that the population is at least approximately skewed left. (b) Using 95% confidence, what is the…
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?
If the standard deviation of a sample is 4.3 for 28 data values, what would the standard deviation be for the population from which the sample was drawn?