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- A teacher finds that for test grades in Class A, x̄ = 32 and S x = 4; for test grades in Class B, x̄ = 32 and S x = 8.a. What score should he predict for students in each class? b. Which class permits the better predictions? Why?Which of the following is the normal form of the equation 5x + 12y + 39 = 0? a. 5/13x + 12/13y = -3 b. -5/13x -12/13 = -3 c. 5/13x + 12/13y = 3 d. 5/13x -12/13y = -3given the difference equation below where x(k)=1 for k>=0. y(k)-y(k-1)+y(k)=x(k). use the sequential method to solve for the first samples of y(k).
- These are the same data as in the previous question. Find the value of b2. You should use a computer to find the solution. Y X1 X2 X3 27.6 1 4 4 9.4 3 5 3 15.6 4 7 1 20. 5 5 4 12.3 3 7 3 8.7 5 3 6 7.3 7 5 7 14.9 6 4 8 17.0 5 3 9 -0.8 4 2 0REFER TO THE TABLE 1. Find the significant two-tailed. A. 3.97x10-6 B. 5.97x10-6C. 4.97x10-6D. 4.27x10-62. Find the equation that predicts the size if the price is given. A. y=27.789x+105.36B. y=25.789x+105.36C. y=27.789x+115.36D. y=27.129x+105.363. What is the size if the price is 6 millions?A. 270B. 271C. 272 D. 273During a nationwide program to immunize thepopulation against a new strain of the flu, pubic health officials determined that the cost of inoculating x% of the susceptible populatioin would be approximately C(x) = 1.85x/ 100-x million dollars. a. suppose 17 million dollars are available for providing immunication. What percentage of the sesceptible population will not receive immunization? b. If money was not a problem will they be able to provide immunization to the entire susceptible population?
- In order to determine a realistic price for a new product that a company wants to market the company’s research department selected 10 sites thought to have essentially identical sales potential and offered the product in each at a different price. The resulting sales are recorded in the accompanying table: Price ($) Sales ($1,000s) 15.00 15 15.50 14 16.00 16 16.50 9 17.00 12 17.50 10 18.00 8 18.50 9 19.00 6 19.50 5 d). Interpret the meaning of the coefficients of the equation of the sample regression line. e). At 5% level of significance, is there evidence of a linear relationship between the sales and price?3.3 q1 The average pollen count in a certain city on day x of the pollen season is P(x) = 6x − 0.2x2 (for 0 < x < 30). On which day is the pollen count highest?A project management consultant estimated that if a particular project was completed t years after completion, N thousand persons would benefit firectly from the project, where N(t)=t3/3-4.5t2+16t 0≤t≤10 for waht value of t will the lagest number of people receive direct benefits
- In a study of the relationship between the Brinell hardness (x) and tensile strength in ksi (y) of specimens of cold drawn copper, the least-squares line was y = −196.32 + 2.42x. Predict the tensile strength of a specimen whose Brinell hardness is 102.7. If two specimens differ in their Brinell hardness by 3, by how much do you predict their tensile strengths to differ?I have found the values of k (-2 and 1) but i need with parts i through IVDuring a nationwide program to immunize the population against a new strain of the flu, public health officials determined that the cost of inoculating x% of the susceptible population would be approximately C(x)=1.85x /100 − x million dollars. (i) What would it cost to providing immunization to the first 20% of the susceptible population?(ii) What would it cost to providing immunization to the next 30% of the susceptible population?(iii) Suppose 17 million dollars are available for providing immunization. What percentage of the susceptible population will not receive immunization?