Civil and Environmental Engineering Answers

Design an interior floor panel of 5.0m x 5.0m (effective dimensions) of an RC framed building. LL = 3kPa and floor finish = 1 kPa. Use M20 and Fe415

100 liters of certain liquid has a mass of 85 kg. Determine the specific weight and gravity of the liquid

Consider the scores of a random sample of 16 teacher education students at certain university on ethical standard are as follows: 84,79,90,100,105,83,87,112,95,76,84,89,101,88,90 and 105. Test at the 0.05 level significance, the median score for the population is less than 90

A certain experiment consisted of l= 5 treatments, with sample sizes n1=n2=n3=n4=n5=4. The sun of squares was SSTr=43.7 and SSE=79.8.

a. How many degrees of freedom are there for SSTr?

b. How many degrees of freedom are there for SSE?

c. Find the treatment mean square MSTr.

d. Find the error mean square MSE.

e. Find the value of the test statistic for testing the hypothesis

f. Find the level a=0.05 critical value

g. State your conclusion regarding null hypothesis. Use the a=0.05 level of significance.

If only one city were tested,and the true mean for this city was equal to the national average of 487,what is the probability that null hypothesis would be rejected, leading to a true conclusion

Independent random samples were drawn from approximately normal populations. The sample means x1= 6.8 and x2= 4.9. the sample standard deviations were s1= 1.6 and s2= 1.3. the sample sizes were n1= 12 and n2= 10

a) find the value of the test statistic t.

b) find the number of degrees of freedom for t.

c) make an interpretation of the result. Do you reject null hypothesis at a= 0.01 level?

Test the significance at 0.05 level of the computed values of correlation r= 0.65 with a sample size of 10

A supplier sells ropes. He claims that the ropes have a mean strength of 34 pounds and a variance of 64 pounds. A random sample of 32 ropes selected from a shipment yields a mean strength of 31 pounds. Could the claim of the supplier be rejected at 0.05 level?

Think 5 ways in TRANSPORT NETWORK which it impacts on your daily life.

Think 5 ways in DRAINAGE which it impacts on your daily life.