ooo Verizon LTE 9:29 PM 14% webassign net 2 3 Assignment Submission For this ass
ID: 3022701 • Letter: O
Question
ooo Verizon LTE 9:29 PM 14% webassign net 2 3 Assignment Submission For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. nt Scoring Your last submission is used for your score Kevlar epoxy is a material used on the NASA space shuttles. Strands of this epoxy were tested at the 90% breaking strength. The following data represent time to failure (in hours) for a random sample of 50 epoxy strands. Let x be a random variable representing time to failure (in hours) at 90% breaking strength. La 2.17 061 0.56 0.34 1SI IAS (a) Find the range. (b) use a calculator to calculate yx and x2. (Round your answers to two decimal places.) (c) Use the results of part (b) to compute the sample mean, variance, and standard deviation for the time to failure. (Round your answers to two decimal places.) (d) Use the results of part (c) to compute the coefficient of variation. (Round your answer to the nearest whole number.) What does this number say about time to failure? The standard deviation of the time to failure is just slightly smaller than the average time. O The coefficient of variation says nothing about time to failure. o The standard deviation of the time to failure is just slightly larger than the average time.Explanation / Answer
d)
COV = s / X *100% = 1.33/1.24*100%
= 107.2580645%
= 107% [ANSWER]
******************
The standard deviation of the time to failure is just slighlty larger than the average time.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.