Concept explainers
Flawed Pentium computer chip. In October 1994, a flaw was discovered in the Pentium microchip installed in personal computers. The chip produced an incorrect result when dividing two numbers. Intel, the manufacturer of the Pentium chip, initially announced that such an error would occur once in 9 billion divisions, or “once in every 27,000 years” for a typical user; consequently, it did not immediately offer to replace the chip.
Depending on the procedure, statistical software packages (e.g., Minitab) may perform an extremely large number of divisions to produce the required output. For heavy users of the software, 1 billion divisions over a short time frame is not unusual. Will the flawed chip be a problem for a heavy Minitab user? [Note: Two months after the flaw was discovered, Intel agreed to replace all Pentium chips free of charge.]
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Statistics for Business and Economics (13th Edition)
Additional Math Textbook Solutions
The Practice of Statistics for AP - 4th Edition
Statistics: The Art and Science of Learning from Data (4th Edition)
Elementary Statistics: Picturing the World (7th Edition)
Introductory Statistics (10th Edition)
Elementary Statistics Using the TI-83/84 Plus Calculator, Books a la Carte Edition (4th Edition)
- a report about an isolated community claims there are more newborn females than males although we assume equal frequencies for each. Records indicate 628 boys and 718 girls born in the past month. what are Ho and Ha?arrow_forwardThe table shows the leading causes of death in a certain country in a recent year. The population of the country was 311311 million. If you lived in a typical city of 500,000, how many people would you expect to die of cancercancer each year? Cause Deaths Cause Deaths Heart disease 596 comma 700596,700 Alzheimer's disease 84 comma 90084,900 Cancer 575 comma 300575,300 Diabetes 73 comma 40073,400 Chronic respiratory diseases 143 comma 100143,100 Pneumonia/Influenza 53 comma 40053,400 Stroke 128 comma 600128,600 Kidney disease 45 comma 30045,300 Accidents 122 comma 500122,500 Suicide 38 comma 60038,600 About people would be expected to die of cancer each year. (Type a whole number. Round to the nearest person as needed.)arrow_forwardLast month, the Women's Hospital reported 123 obstetrical discharges and five deaths. (The deaths are included in the discharges.) The causes of the five deaths were: • Injuries due to spousal abuse • Injuries due to an automobile accident • Suicide • Hemorrhage after C-section due to severed uterine artery • Pre-eclampsia Calculate the direct maternal mortality rate for this hospital. Round to two decimal places.arrow_forward
- An immunologist is interested in whether the number of symptoms of the flu a person first exhibits is related to how many days that person will be sick. What is the appropriate test?arrow_forwardEach year, researchers at the U.S. Bureau of Labor Statistics (BLS) administer the American Time Use Survey (ATUS). Researchers estimate the average amount of time Americans spend on daily activities, such as working, housework, and leisure activities. In particular, one activity that is of interest is the average amount of time Americans spend watching television each day. A researcher complied a random sample of 12 Americans and asked each person how much time they spent watching television each day. The results are given below. 2.7 2.3 3.4 0.6 4.8 1.8 3.7 4.8 1.8 4.6 4.2 1.6 Determine the point estimate, x¯ and the sample standard deviation, s. Round the solutions to four decimal places, if necessary. xwith the - on top of x = s= Using a 98% confidence level, determine the margin of error, E, and a confidence interval for the average time Americans spend watching television each day. Report the confidence interval using interval notation. Round solutions to two decimal…arrow_forwardEach year, researchers at the U.S. Bureau of Labor Statistics (BLS) administer the American Time Use Survey (ATUS). Researchers estimate the average amount of time Americans spend on daily activities, such as working, housework, and leisure activities. In particular, one activity that is of interest is the average amount of time Americans spend watching television each day.A researcher complied a random sample of 16 Americans and asked each person how much time they spent watching television each day. The results are given below. 1.9 2.3 3.9 4.4 3.2 1.5 1.2 4.4 0.9 4 0.6 3.9 4.5 1.9 1.8 3.7 Determine the point estimate, x¯ and the sample standard deviation, s. Round the solutions to four decimal places, if necessary.x¯=s=Using a 95% confidence level, determine the margin of error, EE, and a confidence interval for the average time Americans spend watching television each day. Report the confidence interval using interval notation. Round solutions to two decimal places, if…arrow_forward
- The marketing team at Canadian Sport Apparel predicts total sales revenue will increase by 5%, 7%, and 10% in each of the next three years, respectively. If current sales revenue is $3,400,000, what will be the size of the sales revenue increase during the third year?Increase in sales revenue during the third year (Using the BA II calculator- Steps)arrow_forwardDenver's population is 856,000 and is growing at a rate of 3.5% per year. Find the population in 8 years. Round to the nearest whole number, as needed and put the comma in the appropriate locations.arrow_forward61,000 people died in the worst flu season of the past decade.Covid 19 has killed eight times that many. Assuming this headline is true,how many people had died from Covid 19 when it was posted ?arrow_forward
- Assume that a recent survey suggests that about 88% of computers use a new operating system.arrow_forwardA certain vehicle loses 35% of its value each year. Compute the value of the vehie at the end of the 3rd yeararrow_forwardIt is claimed by the makers of Kellogg's Raisin Bran that in each value-sized box of Raisin Bran, there are "two scoops of raisins." It turns out that "two scoops" of raisins is equivalent to 10 ounces of raisins. If each value-sized box of raisins should have two scoops, or 10 ounces, of raisins, this means that if we could look at the population of value-sized boxes of Raisin Bran, the average amount of raisins in the boxes would be 10 ounces. Suppose there is concern that the machines responsible for filling the value-sized boxes might be putting more than 10 ounces of raisins in each box. A sample of 100 value-sized boxes is inspected by a quality assurance engineer, and he finds the boxes contain an average of 10.2 ounces of raisins, with a sample standard deviation of 0.8 ounces. If a hypothesis test is conducted in order to test the claim that H,: u = 10 , what will the P-value be? A. Less than 0.01 B. Between 0.01 and 0.05 C. Exactly equal to 0.05 D. Between 0.05 and 0.10 E.…arrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics 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:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman