1. An important property of fiber is its ability to absorb water. Thirty (30) randomly selected pieces of cotton fiber were found to have an average percent absorbency of 20 with a standard deviation of 1.75. On the other hand, 30 pieces of acetate had an average percent absorbency of 14 and a standard deviation of 1.50. a) Assuming that the percent absorbency is normally distributed and that the population variances for the two variances are the same, is there convincing evidence to conclude that the mean percent absorbency for cotton fiber is significantly higher than for acetate? Use a significance level of 0.10. b) What is the p-value of the test statistic? c) Determine the corresponding confidence interval for the mean difference between the average percent absorbency of the two fibers.

you forgot to answer question D

Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = In(5x), y = 4, y = 6, x = 0; about the y-axis V = Sketch the region. y 80 60 40 2 20아 20 40 60 80 6 8

Please help me answer the following questions. Thank you

Hello. Can you please in words explain how you got the answer that you did?

could you specify the answer?