Mathematics, 26.10.2021 07:00 xEmqq2034
The following data represent soil water content (percent water by volume) for independent random samples of soil taken from two experimental fields growing bell peppers
Soil water content from field I: x1;n1=72
15.1 11.2 10.3 10.8 16.6 8.3 9.1 12.3 9.1 14.3
10.7 16.1 10.2 15.2 8.9 9.5 9.6 11.3 14.0 11.3
15.6 11.2 13.8 9.0 8.4 8.2 12.0 13.9 11.6 16.0
9.6 11.4 8.4 8.0 14.1 10.9 13.2 13.8 14.6 10.2
11.5 13.1 14.7 12.5 10.2 11.8 11.0 12.7 10.3 10.8
11.0 12.6 10.8 9.6 11.5 10.6 11.7 10.1 9.7 9.7
11.2 9.8 10.3 11.9 9.7 11.3 10.4 12.0 11.0 10.7
8.8 11.1
Soil water content from field II: x2;n2=80
12.1 10.2 13.6 8.1 13.5 7.8 11.8 7.7 8.1 9.2
14.1 8.9 13.9 7.5 12.6 7.3 14.9 12.2 7.6 8.9
13.9 8.4 13.4 7.1 12.4 7.6 9.9 26.0 7.3 7.4
14.3 8.4 13.2 7.3 11.3 7.5 9.7 12.3 6.9 7.6
13.8 7.5 13.3 8.0 11.3 6.8 7.4 11.7 11.8 7.7
12.6 7.7 13.2 13.9 10.4 12.8 7.6 10.7 10.7 10.9
12.5 11.3 10.7 13.2 8.9 12.9 7.7 9.7 9.7 11.4
11.9 13.4 9.2 13.4 8.8 11.9 7.1 8.5 14.0 14.2
A. Use a calculator with mean and standard deviation keys to verify that x1=11.42, s1=2.08, x2=10.65, and s2=3.03
B. Let m1 be the population mean for x1 and let m2 be the population mean for x2. Find a 95 percent confidence interval for m1-m2.
C. Interpretation: Explain what the confidence interval means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? At the 95 percent level of confidence, is the population mean soil water content of the first field higher than that of the second field?
D. Which distribution (standard normal or Student's t) did you use? Why? Do you need information about the soil water content distributions?
Answers: 2
Mathematics, 21.06.2019 19:30
What are the solutions to the following equation? |m| = 8.5 the value of m is equal to 8.5 and because each distance from zero is 8.5.
Answers: 3
Mathematics, 21.06.2019 20:00
Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books
Answers: 1
The following data represent soil water content (percent water by volume) for independent random sam...
Mathematics, 06.10.2021 14:00
English, 06.10.2021 14:00
Mathematics, 06.10.2021 14:00
Mathematics, 06.10.2021 14:00
Mathematics, 06.10.2021 14:00
Biology, 06.10.2021 14:00
Mathematics, 06.10.2021 14:00
Mathematics, 06.10.2021 14:00
Advanced Placement (AP), 06.10.2021 14:00
Social Studies, 06.10.2021 14:00
Social Studies, 06.10.2021 14:00