In polymer chemistry, Suppose we have two polypropylene samples. One is atactic and one is isotactic. a)...

In polymer chemistry, Suppose we have two polypropylene samples. One is atactic and one is isotactic.

a) Explain the microstructural difference between the two;

b) Would you expect the atactic sample to be stronger, weaker, or the same strength as the isotactic sample? Explain.

Expert Solution

queen_honey_blossom answered 2 years ago

We use a paired-samples t test when we have two samples, and the same participants are...

We use a paired-samples t test when we have two samples, and the same participants are in both samples; to conduct the test, we calculate a difference score for every individual in the study. Discuss what areas in psychology would benefit from using a paired-sample t test to better understand that phenomena. For example, when measuring intelligence, we could develop an intervention to help improve intelligence, and the compare before and after scores for each participant. I asked this question...

In polymer Chemistry, Give description on a specific characterization method.

Which one can achieve higher crystallinity: isotactic polypropylene or atactic polypropylene? Explain your reasoning .

Suppose that we have two bags each containing black and white balls. One bag contains two...

Suppose that we have two bags each containing black and white balls. One bag contains two times as many white balls as black balls. The other bag contains two times as many black balls as white. Suppose we choose one of these bags at random. For this bag we select five balls at random, replacing each ball after it has been selected. The result is that we find all balls are white balls. What is the probability that we were...

1. Suppose we have two sets of prediction for the inflation rate for next year: one...

1. Suppose we have two sets of prediction for the inflation rate for next year: one from a random sample of Fortune 500 firms and another from a random sample of university economists. At 0.05 level can it be claimed that on the average university educators are predicting a higher inflation rate for next year than the major private businesses? Fortune 500 Firms 4.3% 3.8% 6.0% 4.4% 5.1% 5.6% 4.2% 6.1% 4.5% 4.0% University Economists 4.4% 5.9% 7.0% 5.1% 5.9%...

Suppose we have two thermometers. One thermometer is very precise but is delicate and heavy (X)....

Suppose we have two thermometers. One thermometer is very precise but is delicate and heavy (X). We have another thermometer that is much cheaper and lighter, but of unknown precision (Y). We would like to know if we can (reliably) bring the lighter thermometer with us into the field. So, we set up an experiment where we expose both thermometers to 31 different temperatures and measure the temperature with each. We get the following observations x = 0, 4, 8,...

Suppose we have two ways to source a product. One way is from the local supplier,...

Suppose we have two ways to source a product. One way is from the local supplier, while a second way is from a distant supplier. The terms and parameters for each source are as given in following table: ?Local Supplier Distant Supplier Cost per unit, c $1.15 $1.00 Lead time (no uncertainty), L 3 weeks 12 weeks Transportation cost per unit, c?t $0.10 $0.12 Suppose demand for the component is ?=500/week; ?=100/week. (Assume normally distributed demand) Suppose we have a...

We have two samples of cats, n = 6 males and n = 6 females. Is...

We have two samples of cats, n = 6 males and n = 6 females. Is there a significant difference in the weights of cats based on gender? Male 14.8 10.1 15.6 10.7 9.6 11 Female 6.5 7.2 11 8.5 13.5 7.3 Conduct an independent sample t-test using a .05 level of significance. M males= M females= df= SS males= SS females= Pooled variance= Standard error= Mean difference= t obtained= decision= d= r2=

Suppose we are studying the effect of diet on height of children, and we have two...

Suppose we are studying the effect of diet on height of children, and we have two diets to compare: diet A (a well-balanced diet with lots of broccoli) and diet B (a diet rich in potato chips and candy bars). We wish to find the diet that helps children grow faster. We have decided to use 20 children in the experiment, and we are contemplating the following methods for matching children with diets: i. Let them choose. ii. Take the...

Suppose two independent random samples of sizes n1 = 9 and n2 = 7 that have...

Suppose two independent random samples of sizes n1 = 9 and n2 = 7 that have been taken from two normally distributed populations having variances σ12 and σ22 give sample variances of s12 = 117 and s22 = 19. (a) Test H0: σ12 = σ22 versus Ha: σ12 ≠ σ22 with σ = .05. What do you conclude? (Round your answers to 2 decimal places.) F = F.025 = H0:σ12 = σ22 (b) Test H0: σ12 < σ22versus Ha: σ12...

Question