Times for a surgical produce are normally distributed. There are two methods. Method A has a mean of 31 minutes and a standard deviation of 3 minutes while method B has a mean of 35 and a standard deviation of 1.5 minutes. Which procedure is preferred if the procedure must be completed within 30 minutes method A or B? which procedure is preferred if the procedure must be completed within 39.5 minutes method B or either method? which produce is preferred if the procedure must be completed within 39 minutes method B or either method?

Two chemical companies can supply a raw material. The concentration of a particular element in this material is important. The mean concentration for both suppliers is the same, but you suspect that the variability in concentration may differ for the two companies. The standard deviation of concentration in a random sample of n₁ = 10 batches produced by company 1 is s₁ = 4.7 grams per liter, and for company 2, a random sample of n₂ = 16 batches yield s₂ = 5.8 grams per liter. Is there sufficient evidence to conclude that the two populations variances differ? Use a = 0.05. a. Because 0.321 < 0.657 <3.77, fail to reject the null hypothesis b. Because 0.265 < 0.657 <3.12, fail to reject the null hypothesis c. Because 0.386 < 0.657 <3.01, fail to reject the null hypothesis d. None among the choices

Suppose that you are designing an instrument panel for a large industrial machine. The machine requires the person using it to reach 2 feet from a particular position. The reach from this position for adult women is known to have a mean of 2.7 feet with a standard deviation of 0.5. The reach for adult men is known to have a mean of 3.1 feet with a standard deviation of 0.7. Both women's and men's reach from this position is normally distributed. If this design is implemented, (a) what percentage of women will not be able to work on this instrument panel? (b) What percentage of men will not be able to work on this instrument panel? (c) Explain your answers to a person who has never had a course in statistics. Click here to view page 1 of the table. Click here to view page 2 of the table. Click here to view page 3 of the table. Click here to view page 4 of the table.

times for a surgical procedure are normally distributed. there are two methods. method a has a mean of 29 minutes and a standard deviation of 5 minutes, while method b has a mean of 33 minutes and a standard deviation of 25 minutes. which procedure is preferred if the procedure must be completed within 37 minutes. method a, b, or either method

Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 31 minutes and a standard deviation of 4 minutes, while method B has a mean of 35 minutes and a standard deviation of 2.0 minutes.   (c) Which procedure is preferred if the procedure must be completed within 39 minutes? multiple choice 3 Method A Method B Either Method

Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 31 minutes and a standard deviation of 6 minutes, while method B has a mean of 35 minutes and a standard deviation of 3.0 minutes. (a) Which procedure is preferred if the procedure must be completed within 32 minutes? Method A Method B Either Method (b) Which procedure is preferred if the procedure must be completed within 42.0 minutes? Method A Method B Either Method (c) Which procedure is preferred if the procedure must be completed within 39 minutes? Method A Method B Either Method