If residuals are normally distributed create the 95

Assignment Help Mathematics
Reference no: EM13473865

A concrete cures it gains strength. The following data represent 7 days and 28 day strength in pounds per square inch (psi) of a certain type of concrete.

7 day strength psi, x        3330     2620     3380     2300     2480

28 day strength psi, y      4850     4190     5020     4070     4120

a) Compute the standard error of the estimate, Se. Se≈(......) (Do not round until  the final answer, Then round to four decimal places as needed)

b) Determine whether the residuals are normally distributed

c) If the residuals are normally distributed,  determine Sb1

d) If the residuals are normally distributed, test whether a linear relation exists between 7 day strength and 28 day strength a= 0.05 level of significance.

e) If the residuals are normally distributed construct a 95% confidence interval about the slop of the true least squares regression line.

f) What is the estimate mean 28 day strength of this concrete if the 7 day is 3000 psi?

Reference no: EM13473865

Questions Cloud

T conduct the hypothesis test first compute test : for the data set shown below do they following. a compute the standard error the point estimate for sigma. b assuming
Solve each system and then tell whether its one solution : solve each system and then tell whether its one solution infinitely many solutions or no solution.1 yx-1 . y-3x-52
The boeing 757-200 er airliner carries 200 passenger and : the boeing 757-200 er airliner carries 200 passenger and has doors with a height of 72 in. .heights of men are normally
Explain why you chose this style for your essay why is the : then discuss how to place your tentative essay into either aristotles classical form of argument or the rogerian
If residuals are normally distributed create the 95 : a concrete cures it gains strength. the following data represent 7 days and 28 day strength in pounds per square inch
Suppose that family incomes in a town or normally : 1.suppose that family incomes in a town or normally distributed with a meeting of 1120 and a standard deviation of 600
Analyze an issue central to the post-911 global clash of : examine an issue central to the post-911 global clash of religions and cultures or one that is linked to the recent
Cmplete the university of phoenix materialmulticultural : format your paper consistent with apa guidelines.resources culturegrams database and racial and ethnic groupsselect and
Write down an equation in slope intercept form for the line : write an equation in slope intercept form for the line that passes through the given point and is parallel to the graph

Reviews

Write a Review

 

Mathematics Questions & Answers

  Volume of solid revolving x

Describe your question and receive a step-by-step response, usually within an hour or two.Find the volume of the solid bounded by x^2/(16 ) + y^2/9 = 1 revolving about the x-axis:

  Use the fact that the sum, difference

Use the fact that the sum, difference, and product of any two integers in an integer.

  Write an equation or function for the total cost

Write an equation/function for the total cost to run the power line between the two buildings in terms of the amount of wire run underground.

  Finding the dimensions of a rectangle using second

finding the dimensions of a rectangle using second derivative test.area a rectangle is bounded by the x- and y- axes

  Retail mathematics sales percentage

The buyer of women's gloves currently has an average inventory of $20500, with an annual turnover rate of 4.0. Because this rate of stock turn is below the industry average, a 7.82% increase in turnover is sought.

  Use the p-value method

At a=0.05 does it appear that the average is lower than what was stated by the Tennis Industry Association? Use the P-Value method, and assume that the variable is approximately normally distributed.

  How much is invested at each rate

Larry has an annual return of $213 from $3000 invested at simple interest, some at 5% and the rest at 8%. How much is invested at each rate?

  Does he need to sell to meet his goal

jason is a sales person at the electronics department of a store. He is 48% short of his goal for the week. His goal is to earn $375. for each cd player he sells he earns $45. how many cd players does he need to sell to meet his goal?

  Find probability that a player''s pick wins the grand prize

Probability that a player's pick wins the grand prize. In a certain lottery, k balls are chosen at random and without replacement from a bin containing N balls numbered 1 through N

  How many grams of each of the two alloys should be

A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 40% lead. How many grams of each of the two alloys should be used to make an alloy that contains 34 g of gold and 104 g of lead?

  What is the largest area you can enclose

If you have 609 feet of fencing and want to enclose a rectangular area up against a long, straight wall, what is the largest area you can enclose?

  For multiple sclerosis patients we wish to estimate the

for multiple sclerosis patients we wish to estimate the mean age at which the disease was first diagnosed. we want a 90

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