subject
Mathematics, 06.05.2020 05:24 rosie20052019

In a test of corrosion resistance, a sample of 62 Incoloy steel specimens were immersed in acidified brine for 4 hours, after which each specimen had developed a number of corrosive pits. The maximum pit depth was measured for each specimen. The mean depth was 850 μm with a standard deviation of 153 μm. The specification is that the population mean depth μ is less than 900 μm.

Find the P-value for testing H0 : μ ≥ 900 versus H1 : μ < 900.

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 15:20
The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time
Answers: 1
question
Mathematics, 21.06.2019 17:00
Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.
Answers: 3
question
Mathematics, 21.06.2019 19:20
1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?
Answers: 2
question
Mathematics, 21.06.2019 22:10
Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?
Answers: 2
You know the right answer?
In a test of corrosion resistance, a sample of 62 Incoloy steel specimens were immersed in acidified...
Questions
question
Mathematics, 03.12.2021 23:30
question
Mathematics, 03.12.2021 23:30
question
Mathematics, 03.12.2021 23:30
question
Mathematics, 03.12.2021 23:30