MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Related questions
Question
Boxes of cereal are labeled as containing 14 ounces. Following are the weights, in ounces, of a sample of 12 boxes:
14.02 13.97 14.11 14.12. 14.10 14.02 14.15 13.97 14.05 14.04 14.11 14.12
The quality control manager is concerned that the
-
Explain why it is not necessary to assess normality for this sample, even though it is a small sample.
-
Show how to find the boundaries of a 98% confidence interval using only the highlighted values from your summary statistics output. (For this activity, do not use any other methods to find the confidence interval.)
-
Write an interpretation for your confidence interval, including units if appropriate. You may round the upper and lower limits to 2 places.
-
Based on the confidence interval, is there a reason the quality control manager should be concerned that the mean weight is actually less than 14 ounces? Explain.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 4 steps with 1 images
Knowledge Booster
Similar questions
- Listed below are heights (cm) randomly selected from the sample of women and heights (cm) randomly selected from the sample of men. Use a 0.01 significance level to test the claim that women have heights with a mean that is less than the mean height of men. Women: 160.3 167.7 166.9 153.3 160.0 177.3 169.1 134.5 163.3 171.1 Men: 190.3 169.8 179.8 179.8 177.0 178.5 173.5 178.7 179.0 181.3 (atuioq ) (a noqqua ol ebnsbivs mioe smih al fanliooin boe nowod noislonos 10onil a lo imiarrow_forwardRefer to the accompanying data table, which shows the amounts of nicotine (mg per cigarette) in king-size cigarettes, 100-mm menthol cigarettes, and 100-mm nonmenthol cigarettes. The king-size cigarettes are nonfiltered, while the 100-mm menthol cigarettes and the 100-mm nonmenthol cigarettes are filtered. Use a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of nicotine. Given that only the king-size cigarettes are not filtered, do the filters appear to make a difference? E Click the icon to view the data table of the nicotine amounts. Nicotine amounts (mg) ..... Determine the null and alternative hypotheses. Но King-Size 100-mm Menthol 100-mm Nonmenthol 9 Brand Nicotine (mg) Brand Nicotine (mg) Brand Nicotine (mg) H1 1 1.5 1 1.2 1 0.9 1.0 2 1.0 2 1.2 Find the F test statistic. 3 1.0 3 1.1 3 0.4 4 1.2 4 0.8 4 1.2 F = (Round to four decimal places as needed.) 5 1.4 1.3 1.1 6 1.3 1.4 0.7 Find the P-value using the F test…arrow_forwardRefer to the accompanying data table, which shows the amounts of nicotine (mg per cigarette) in king-size cigarettes, 100-mm menthol cigarettes, and 100-mm nonmenthol cigarettes. The king-size cigarettes are nonfiltered, while the 100-mm menthol cigarettes and the 100-mm nonmenthol cigarettes are filtered. Use a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of nicotine. Given that only the king-size cigarettes are not filtered, do the filters appear to make a difference? LOADING... Click the icon to view the data table of the nicotine amounts. Nicotine amounts (mg) Dialog content starts King-Size 100-mm Menthol 100-mm Nonmenthol Brand Nicotine (mg) Brand Nicotine (mg) Brand Nicotine (mg) 1 1.3 1 0.9 1 0.2 2 1.2 2 1.0 2 1.1 3 1.0 3 1.2 3 0.6 4 1.1 4 0.9…arrow_forward
- The weights of 20 oranges (in ounces) are shown below. 5.75 6.75 6.25 6.75 6.00 7.50 7.00 7.00 7.50 8.00 7.75 8.25 8.25 8.50 8.50 9.50 9.00 9.75 10.25 10.50 Click here for the Excel Data File Construct a 90 percent confidence interval for the population standard deviation. Note: Scale was only accurate to the nearest ¼ ounce. (Round your answers to 4 decimal places.) The 90 percent confidence interval is from _______ to _______ .arrow_forwardYou must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 28.9 14.3 34.2 35.2 42.7 41.3 39.7 44.2 26.8 36.2 20.4 34.6 Find the 99% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. Assume the data is from a normally distributed population.arrow_forwardRefer to the accompanying data table, which shows the amounts of nicotine (mg per cigarette) in king-size cigarettes, 100-mm menthol cigarettes, and 100-mm nonmenthol cigarettes. The king-size cigarettes are nonfiltered, while the 100-mm menthol cigarettes and the 100-mm nonmenthol cigarettes are filtered. Use a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of nicotine. Given that only the king-size cigarettes are not filtered, do the filters appear to make a difference? Click the icon to view the data table of the nicotine amounts. Determine the null and alternative hypotheses. Ho H₁: an example Get more help - THI O BI acer *** Nicotine amounts (mg) to King-Size 100-mm Menthol Brand Nicotine (mg) Brand Nicotine (mg) 1 1 2 2 3 ^ 4 5 6 7 8 9 10 1.4 1.0 1.0 1.1 1.4 1.1 1.3 1.0 1.3 1.2 2 3 4 5 3 6 7 8 9 10 Print 1.1 0.9 1.1 0.8 1.2 1.4 0.9 1.2 1.4 0.8 100-mm Nonmenthol Brand Nicotine (mg) 1 2 Done 3 4 5 6- 8 9 10 0.9 1.1 0.5…arrow_forward
- Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"arrow_forwardYou are trying to determine that average height of females living in New Jersey. To estimate this population mean, you collect a sample of 100 women and the average height of the women sampled was 54.5 inches. Assume the standard deviation of the population is 3 inches. Using a 95% confidence level, determine the following: a. Based on the poll, what is the point estimate of the mean height of female NJ residents? b. Find the margin of error for this sample. c. Construct a confidence interval to estimate the mean height of female NJ residents using a 95% confidence level. d. What sample size would be required to achieve a margin of error of less than 1 inch ?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning 
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
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