QUESTION 9 1 points Save Answer 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 we suspect that the variability in concentration differ between the two companies. The standard deviation of concentration in a random sample of 1 = 10 batches produced by company 1 is $1 = 4.8 grams per liter, while for company 2, a random sample of n2 = 16 batches yields $2 = 5.9 grams per liter. Is there sufficient evidence to conclude that the two population variances differ? (a) The p-value of the test is Round your answer to three decimal places (e.g. 98.765). (b) Is there sufficient evidence to conclude that the two population variances differ? Use alpha = 0.05. Answer yes or no QUESTION 10 1 points Save Answer A 95% confidence interval on the difference in two means is 3 SW1 -/2$5. Which of the following statements is false? The null hypothesis in Ho: H1 = H2 Versus H1: H1 * #2 is not rejected at the 5% level of significance. A 99% confidence interval would be longer. If the sample sizes had been larger, the 95% confidence interval would have been shorter. The null hypothesis in Ho: P1 -12 =4 versus H1: H1 -P2 * 4 is not rejected at the 5% level of significance