Please this problem needs a JMP or Minitab or other
software.
You may also be expected to set up the appropriate hypotheses,
find the relevant information from given computer output, and
interpret results, especially in the context of the problem.
Please This Problem Needs A Jmp Or Minitab Or Other Software You May Also Be Expected To Set Up The Appropriate Hypothe 1 (26.54 KiB) Viewed 19 times
Please This Problem Needs A Jmp Or Minitab Or Other Software You May Also Be Expected To Set Up The Appropriate Hypothe 2 (11.47 KiB) Viewed 19 times
2) In a study of the flammability of material used in children's sleepwear, the char length (inches) for 8 samples of washed acetate/nylon brushed tricot fabric was measured. The resulting observations were: 8.1, 10.4, 9.5, 8.9, 10.7, 7.8, 10.7, 8.8. Assume the char length is normally distributed. (Data Set: Sleepwear) a) Find the 95% confidence interval for the mean char length. b) To maintain 95% confidence but improve the precision to $ 0.5, what size sample would be necessary? Use a power of 0.30. c) Construct a 95% upper confidence interval for the standard deviation in char length.
Sleepwear Distributi...harLength F 1 2 3 4 CharLength 8.1 10.4 9.5 8.9 10.7 7.8 10.7 8.8 Columns (1/0) a 5 6 Charlength 7 8
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