Mathematics, 11.02.2020 17:30, SoccerHalo

The tensile strength of a fiber used in manufacturing cloth is of interest to the purchaser. Previous experience indicates that the standard deviation of tensile strength is 2 psi. A random sample of eight fiber specimens is selected, and the average tensile strength is found to be 127 psi. (a) Test the hypothesis that the mean tensile strength equals 125 psi versus the alternative that the mean exceeds 125 psi. Use α=0.05. (b)What is the P-value for this test? (c) Discuss why a one-sided alternative was chosen in part (a). (d)Construct a 95% lower confidence interval on the mean tensile strength.

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:30, AM28

Our goal is to collect email addresses from 60% of customers who purchase a product." so that means if i talk to 95 customers, i need to persuade to provide an email address?

Answers: 1

continue

Mathematics, 21.06.2019 16:00, cupcake122016

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

Answers: 1

continue

Mathematics, 21.06.2019 18:00, jay5134

Ray ce is the angle bisector of zacd, which statement about the figure must be true? mzecd-mzecb mzace « 4mzacd zace - zdcb zecd zacd save and exit

Answers: 1

continue

Mathematics, 21.06.2019 21:40, Blakemiller2020

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

Answers: 3

continue

Do you know the correct answer?

The tensile strength of a fiber used in manufacturing cloth is of interest to the purchaser. Previou...