An article in Concrete Research ("Near SurfaceCharacteristics of Concrete: Intrinsic Permeablility," Vol. 41,1989), presented data on compressive strength x and intrinsicpermeability y of various concrete mixes and cures. Summaryquantities are n = 14, Σ yi =572, Σ = 23,530, Σ xi =43,Σ = 157.42, and Σxiyi= 1697.80. Assume thatthe two variables are related according to the simple linearregression model.
(a) Calculate the least squares estimates of the slope andintercept. Estimate . Graph the regression line.
(b) Use the equation of the fitted line to predict whatpermeability would be observed when the compressive strength is x =4.3.
(c) Give a point estimate of the mean permeability when compressivestrength is x = 3.7.
(d) Suppose that the observed value of permeability at x = 3.7 is y= 46.1. Calculate the value of the correspondingresidual.

Solve the word problem. the table shows the low outside temperatures for monday, tuesday, and wednesday. by how many degrees did the low temperature increase from monday to tuesday? this function table shows the outside temperature for a given a. 21.1⁰ b. 8.6⁰ c. 4.9⁰ d. 3.9⁰(the picture is the graph the the question is talking about.)

You and three friends will be going out to eat at your favorite restaurant! each of you will order three items of your choice. you will also need to leave a tip. if you split the bill evenly among all four of you, how much will each person need to contribute? locate a menu for your favorite restaurant and pick three items for yourself and each friend. list the restaurant name, items, and prices in a table like the one below. in the column labeled subtotal, determine the cost of each person’s order. the customary tip is 20% of the total bill. in the column labeled tip, calculate the amount of tip each person should leave. in the column labeled total bill, determine the total of each person’s order, including the tip. restaurant name: names item 1 price item 2 price item 3 price subtotal tip total bill your name friend #1 friend #2 friend #3 part 2: questions answer the following questions, showing all work: what is the total cost of the entire bill (all four meals), including tip? write an expression using fractions to show how to determine the amount that each person will pay. then calculate each person's contributions showing all steps in long division. if each person paid an equal amount, who would save the most money? explain your reasoning using at least two complete sentences.

Why did the ice arena get so hot after the big game (this is math related google it to find the paper