The true mean breaking strength of yarn used in, Ask an Expert

Statistics

The true mean breaking strength of yarn used in manufacturing drapery material is required to be above 100 psi. From past data, the standard deviation of breaking strength is known to be 2 psi. Assume that strength of yarn specimen follows normal distribution. Suppose the manufacturer decides to reject the null hypothesis whenever the sample average of 9 specimens exceeds 100.9 psi.

a) State the appropriate null and alternative hypotheses.

b) Find the probability of Type I error associated with the given rejection procedure.

c) Find the probability of Type II error if the true mean breaking strength is 101.5.

d) Suppose a sample of 9 specimens of yarn resulted in an average breaking strength of 100.8 psi. Find the p-value associated with the tests of hypothesis in (a) and draw your conclusions.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9997841

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Doctoral assistant ships of phd students 50 have paid

Doctoral assistant ships of Ph.D students 50% have paid assistant ships. a random sample of n=200 students is chosen.. based on this sample and using the properties of the binomial distribution, what is the approximate s ...

Let a random sample be taken of size n 64 from a

Let a random sample be taken of size n = 64 from a population with a known standard deviation of 15. Suppose that the mean of the sample is 40. Find the 99% confidence interval for the mean of the population from which t ...

A study was conducted to evaluate the association between

A study was conducted to evaluate the association between benzene exposure and leukemia. Employment records identified 10,000 workers who were occupationally exposed to benzene in the 1980s and 14,000 workers who were no ...

In a single season an average of 24 home runs were hit per

In a single? season, an average of 2.4 home runs were hit per game. Assume the number of home runs per game follows the Poisson distribution. ?a) What is the probability that 6 home runs will be hit in a randomly selecte ...

1 prince georges county public schools wants to access the

1) Prince George's County Public Schools wants to access the effectiveness of its new 1st grade reading program. Ten 1st grade classrooms are randomly selected from across the county. What kind of sampling method is bein ...

Use the standard normal distribution or Use the standard normal distribution or

Use the standard normal distribution or the? t-distribution to construct a 90?% confidence interval for the population mean. Justify your decision. If neither distribution can be? used. In a recent? season, the populatio ...

Project q costs 240 it provides inflows of 120 per year for

Project Q costs 240. It provides inflows of 120 per year for three years. The cost of funds is 6%. Find the replacement chain value needed to compare it to a six year project.

Determine the sample size needed to construct a 90

Determine the sample size needed to construct a 90?% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.5. Assume the standard deviation of the GPA f ...

When a company founder sells stock to outside investors in

When a company founder sells stock to outside investors in order to raise? capital, the share of the company owned by the founder and the? founder's control over the company will be reduced.

Suppose x is a normal random variable with mean mu 54 and

Suppose X is a normal random variable with mean μ = 54 and standard deviation σ =8.? Compute P(X > 42). (Round to four decimal places.)

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert