Confidence interval for the mean temperature

Assignment Help Basic Statistics
Reference no: EM131893760

A new process has been developed that transforms ordinary iron into a kind of super iron called metallic glass. This new product is stronger than steel alloys and is much more corrosion-resistant than steel. However, it has a tendency to become brittle at high temperatures. It is desired to estimate the mean temperature at which it becomes brittle. A random sample of 20 pieces of metallic glass is selected. The temperature at which brittleness is first detected is recorded for each piece. The summary results give a sample mean X of 600 °C and a sample standard deviation s of 15 °C. Find a 90% confidence interval for the mean temperature at which metallic glass becomes brittle.

Reference no: EM131893760

Questions Cloud

Describe which techniques you will use in the future and why : Describe which technique(s) you will use in the future and why. Name and describe the three memory techniques you selected.
Why you would use the treatment theory : Complete your treatment plan template for Eliza based on the previous assignments findings and any feedback received from your instructor.
What is the probability that at least two of the typewriters : A lot of 20 typewriters contains four defectives. 5 typewriters are randomly selected, what is the probability that at least two of the typewriters are defectiv
Investors are looking at different investment opportunities : WG Investors are looking at three different investment opportunities. calculate the annual return for each investment and select the best investment choice.
Confidence interval for the mean temperature : Find a 90% confidence interval for the mean temperature at which metallic glass becomes brittle.
How are the two narrators and their families different : Write your first draft. Then revise and edit and write your final essay. How are the two narrators and their families different?
Confidence interval for the proportions the population : A survey of 453 citizens found that 347of them favor a new bill introduced by the city/ We want to find a 95% confidence interval for the proportions
Different investors select different potential investments : Why might two different investors select two different potential investments if one investment had the highest return and highest risk over other investment.
Standard deviation of the sampling distribution : A sample of 163 randomly selected students, found that the proportion of students planning to travel home for thanksgiving is 0.72.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Introduction of the euro coin in belgium

The euro. Shortly after the introduction of the euro coin in Belgium, newspapers around the world published articles claiming the coin is biased.

  Suppose that there are a total of 16 students in an

suppose that there are a total of 16 students in an elementary school class. the teacher assigns each of the students a

  The lifetime of a certain type of colour television

question the lifetime of a certain type of colour television picture tube is known to follow a normal distribution

  Problem related top the coins are flipped

Twenty three coins are flipped. R is the event that at least twenty heads come up. Q is the event that the last nineteen flips all came up heads.

  Find out the standard error of the proportion

a. Determine the sample proportion, p, of households with cellular telephones that can be used to access the Internet. b. If the population proportion is 0.40, determine the standard error of the proportion.

  Problem regarding the microcomputer components

Microcomputer components. A staff analyst for a manufacturer of microcomputer components has compiled monthly data for the past 16 months on the value of industry production of processing units that use these components (X, in million dollars) and..

  Hypotheses for the study of electrical conductivity

Measuring conductivity. State the null and alternative hypotheses for the study of electrical conductivity described in Exercise 15.2. (Is the alternative hypothesis one-sided or two-sided?)

  Working with probability for specific situation

Do you try to pad your insurance claim to cover your deductible? About 40% of all U.S. adults will try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office.

  The breaking strength of a rivet has a mean value of 9900

the breaking strength of a rivet has a mean value of 9900 psi and a standard deviation of 498 psi.a what is the

  Determining mutually exclusive information from abstract

Following is based on information from Statistical abstract of the United States, Dec, 1992. Are A and B mutually exclusive?

  Conclusion of the radon-nikodym theorem

In [0, 1] with Borel σ-algebra B, let µ( A) = 0 for all A ∈ B of first cate- gory and µ( A) = +∞ for all other A ∈ B. Show that µ is a measure, and that if ν is a finite measure on B absolutely continuous with respect to µ, then ν ≡ 0. Hint: See §..

  Major purpose of cost accounting

1. A major purpose of cost accounting is to

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd