Give a 99.8% confidence interval, for µi – µ2 given the following information. 2.24, 81 = 2.66, 82 = 0.59 п 3 45, ī1 0.8 n2 = 20, ã2

Large samples of women and men are​ obtained, and the hemoglobin level is measured in each subject. Here is the​ 95% confidence interval for the difference between the two population​ means, where the measures from women correspond to population 1 and the measures from men correspond to population​ 2: -1.7 g/dL <μ1-μ2<-1.62 g?dL What does the confidence interval suggest about equality of the mean hemoglobin level in women and the mean hemoglobin level in​ men?        Because the confidence interval [includes/does not include] [number], it appears that there [is/is not] a significant difference between the mean level of hemoglobin in women and the mean level of hemoglobin in men

In the past, a chemical company produced 880 pounds of a certain type of plastic per day. Now, using a newly developed and less expensive process, the mean daily yield of plastic for the first 50 days of production is 871 pounds; the standard deviation is 21 pounds. Do the data provide sufficient evidence to indicate that the mean daily yield for the new process is less than that of the old procedure? (Use α=0.05) (a) Alternative hypothesis for the problem above is μ 871 Ομ 880 <

Give a 98% confidence interval, for μ1−μ2 given the following information. n1=45  xbar1=2.62, s1=0.8n2=60n xbar = 3.02, s2=0.67 ____ ±± ____ Use Technology Rounded to 2 decimal places.