Concept explainers
Concept 4: Weighted Mean
For Exercises 43-46, use the following numerical values assigned to grades to compute GPA. Round each GPA to the hundredths place. (See Example 7.)
Compute the GPA for the following grades. Round to the nearest hundredth.
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- Use this data for the exercises that follow: In 2013, there were roughly 317 million citizens in the United States, and about 40 million were elderly (aged 65 and over).[34] 58. If you meet five U.S. citizens, what is the percent chance that three are elderly? (Round to the nearest tenth of a percent)arrow_forwardA production process produces an item. On average, 16% of all items produced are defective. Each item is inspected before being shipped, and the inspector misclassifies an item 5% of the time. Please round the final answers to 3 decimal places. What proportion of the items will be "classified as good"? P(classified as good)=arrow_forwardWeb conferencing has grown over the last 20 years. The amount (in millions of dollars) spent on Web conferencing from 2006 through 2010 is listed in the table. year 2006 2007 2008 2009 2010 Amount 920 1160 1380 1600 1900 a. What is the average rate of change in the amount spent on Web conferencing from 2006 to 2008? Include units. Units are required for this answer. X b. What is the average rate of change in the amount spent on Web conferencing from 2007 to 2008? Include units. c. What is the average rate of change in the amount spent on Web conferencing from 2008 to 2010? Include units. d. What is the average rate of change in the amount spent on Web conferencing from 2008 to 2009? Include units. e. Give a good approximation for the rate of change in the amount spent on Web conferencing by the end of 2008? Include units.arrow_forward
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