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ID: 3070924 • Letter: S
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Safari File Edit View History Bookmarks Window Help ) 50% D sun 9:35 PM Q. : 0 mathxl.com yLuMath 227 Statistics section 20883 Mark Rodriguez-Abad9/16/18 9:35 PM MIS Homework: Section 3.3 Homework (Optional) Save 3 My Score: 0 of 2 pts 1 of 2 (0 complete)> Hw Score: 0%, 0 of 8 pts | 3.3.1-T Question Help Recently, a random sample of 13-18 year olds was asked, "How much do you currently have in savings?" The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of savings Quiz Lecture Click the icon to view the frequency distribution for the amount of savings. Lab ActiThe sample mean amount of savings is S. Frequency distribution of amount of savings (Round to the nearest dollar as needed.) : 0 StatC Mult Chapter eText Tools Savings Frequ 344 90 62 $0-$199 $200 $399 $400-$599 $600-$799 $800 S999 $1000-$1199 S1200 $1399 Enter your answer in the answer box and then click Check Print Done remaining 16Explanation / Answer
mean = sum of ( Interval midpoint * frequency) / sum of frequency
= 99.5 * 344 + 299.5 * 90+........+1299.5*2/ ( 344+90+....2)
= 237.9045
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