Mathematics, 21.04.2020 01:17 12290737
Five samples of a ferrous-type substance are to be used to determine if there is a difference between a laboratory chemical analysis and an X-ray fluorescence analysis of the iron content. Each sample was split into two sub-samples and the two types of analysis were applied. Following are the coded data showing the iron content analysis:
Sample
Analysis 1 2 3 4 5
X-rays 2.0 2.0 2.3 2.1 2.4
Chemical 2.2 1.9 2.5 2.3 2.4
Assuming that the populations are normal, test at the 0.05 level of significance whether the two methods of analysis give, on the average, the same result.
Answers: 3
Mathematics, 21.06.2019 19:00
What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )
Answers: 1
Mathematics, 21.06.2019 22:00
You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?
Answers: 3
Five samples of a ferrous-type substance are to be used to determine if there is a difference betwee...
Mathematics, 02.10.2019 23:50
Arts, 02.10.2019 23:50
Mathematics, 02.10.2019 23:50
Health, 02.10.2019 23:50
Mathematics, 02.10.2019 23:50
Mathematics, 02.10.2019 23:50
Social Studies, 02.10.2019 23:50
Mathematics, 02.10.2019 23:50
Spanish, 03.10.2019 00:00