Set a random seed, and then compute the loocv errors that result from fitting the following four models using least squares: i. y = β0 + β1x + ε ii. y = β0 + β1x + β2x2 + ε iii. y = β0 + β1x + β2x2 + β3x3 +ε iv. y = β0 + β1x +β2x2 + β3x3 + β4x4 +ε. note you may find it to use the data. frame() function to create a single data set containing both x and y .

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

Can someone me find the original price? the discount is 5% and the sale price is $68.40