### Question 1

1. The article “An Investigation of the CaCO3-CaF2-K2SiO3-SiO2-Fe Flux System Using the Submerged Arc Welding Process on HSLA-100 and AISI-1081 Steels” (G. Fredrickson, M.S. Thesis, Colorado School of Mines, 1992) describes an experiment in which welding fluxes with differing chemical compositions were prepared. Several welds using each flux were made on AISI-1018 steel base metal.The results of hardness measurements, on the Brinell scale, of five welds using each of four fluxes are presented in Table below. Assume equal variances and level of significance α=0.05. Hint: only one factor i.e. flux type is considered. Use 4DP for all your answers.
 Flux Sample Values Sample Mean Sample Standard Deviation A 250 264 256 260 239 253.8 9.7570 B 263 254 267 265 267 263.2 5.4037 C 257 279 269 273 277 271.0 8.7178 D 253 258 262 264 273 262.0 7.4498

H 0and H 1are stated as: H0: μ 1= μ 2= μ 3= μ 4 H1:not all µ jare equal
1. SSA = , SSW =
2. MSA = ,MSW =
3. F test statistic F stat= .
4. Critical value F α,df1,df2=
5. p-value= (You may use R or data analysis tool in Excel to find the p-value)
6. Decision: we (fill in the blank by " should" or " should not") reject the null hypothesis.

### Question 2

1. A study is made of the effect of curing temperature on the compressive strength of a certain type of concrete. Five concrete specimens are cured at each of four temperatures, and the compressive strength of each specimen is measured(in MPa). The results are as follows:
 Temperature (C 0) Strengths (MPa) 0 31.2 29.6 30.8 30.0 31.4 10 30.0 27.7 31.1 31.3 30.6 20 35.9 36.8 35.0 34.6 36.5 30 38.3 37.0 37.5 36.1 38.4

Assume equal variances and α=0.05. ANOVA analysis may be performed to check if the mean strength differs with temperature. Use 4DP for all your solutionsH 0and H 1are stated as: H0: μ 1= μ 2= μ 3= μ 4H1: not all µ jare equal
1. SSA = , SSW =
2. MSA = , MSW =
3. F test statistic F stat= .
4. Critical value F α,df1,df2=
5. Decision: we (fill in the blank by " should " or " should not ") reject the null hypothesis.

## Science : What type of communication would you us...

please give an example of the topic above. What type of communication would you use as a hospital leader...

...

...

## Biology : Science Question.docx...

Running Head: SCIENCE FOR LIFE1Science for LifeStudents Name:Course Name:Professors Name:Date:SCIENCE FOR LIFE2Science for lifeQuestion 1: canned veg...

## I need help in fixing my report...

these are some comments i got to use them in fixing the report Comments: The...

## Biology : Assignment 2 Final...

Running Head: ASSIGNMENT 21ASSIGNMENT 2 (200 POINTS)NameInstitution of AffiliationDateASSIGNMENT 22SUPERMARKET RESEARCHImagine that you are plant hun...

## GEN 480 Week 1 Individual Assignment Ethics Awaren...

GEN 480 Week 1 Individual Assignment Ethics Awareness Inventory...

## Holden's Loss...

In our society, several individuals have a tremendously difficult time grieving the loss of a love...

## answer the following questions fully...

please answer each question using at least 250 words eachi will provide the link to read the chapters. the book is Transformat...

## 5 - 250 Word Essay Questions...

5 - 250 Word Essay QuestionsEthical Dilemma 1: Gun RallyOne afternoon you receive an anonymous tip that a local gunadvocacy g...

## Psychology : Creation Of Hope...

Running Head: THERAPY.In the counseling profession, clients seek encouragement and a sense of hope that they willreceive treatment. However, some sit...

## Macroeconomics...

I will need this assignment back by tomorrow no later than 10pm. It has 4 questions ...
Calculate Price

When you use PaperHelp, you save one valuable — TIME

You can spend it for more important things than paper writing.

Approx. price
\$65
Order a paper. Study better. Sleep tight. Calculate Price!
Calculate Price
Approx. price
\$65