Home 1 My Classes - | User Settingsl Log Out M Question 2 v 13 3/7 pts '0 97-99 (D Details Score on last try: 3 of 7 pts. See Details for more. > Next question You can retry this question below The lifetimes of light bulbs are normally distributed with a mean of 1480 hours and a standard deviation of 150 hours. 1. Determine the proportion of light bulbs lasting less than 1370 hours. Round your answer to 4 decimal places. 0.2317 ~/ 2. The longest lasting 5 percent of light bulbs last _ hours or more. Round your answer to 1 decimal place. 1727.5 x 3. The middle 80 percent of light bulbs last between 7 and 7 hours. Round your answers to 1 decimal place. 1288 x\" 1672 x 4. Determine the proportion of light bulbs lasting between 1380 and 1610 hours, Round your answer to 4 decimal places. 1 0.5544 J 5. Determine the proportion of light bulbs lasting more than 1610 hours. Round your answer to 4 decimal places. 0.1931 \\/ 6. The shortest-lasting 10 percent 01 light bulbs last hours or less. Round your answer to 1 decimal place. i 1288 x] Question Help: 8 Message instructor Home l My Classes v | User Settingsl Log Out Question 3 v Score on last try: 3 of 7 pts. See Details for more. You can retry this question below Scores on each section of the SAT exam are normally distributed with a mean of 520 and a standard deviation of 90. 1. Determine the proportion of SAT scores less than 335. Round your answer to 4 decimal places. jomee 2. How high of a score does a student need to be in the top 10 percent of SAT scores? Round your answer to 1 decimal place. 635.2 X 3. The middle 80 percent of SAT scores are between and . Round your answers to 1 decimal place. 404.8 x\" 635.2 x 4. Determine the proportion of SAT scores between 370 and 670. Round your answer to 4 decimal places. 0.9044 ~/ 5. Determine the proportion of students with SAT scores greater than 665. Round your answer to 4 decimal places. ' 00536 ~/ 6. How low of a score does a student need to be in the bottom 20 percent of SAT scores? Round your answer to 1 decimal place. i 444.4 x] Question Help: 8 Message instructor Submit Question Progress saved\" a WC. 8 3/? pts '0 99 O Details