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- Q3) The table below show the number of hours(x) 20 students spent studying spansh in the month before an examination and their percentage score(y). A) Determine SEE If you have the model y = 0.5x +49 B)Find the fit line ( Regrsion line) for these points Hours of study (x) Exam mark%(y) 22 70 21 13 33 25 32 40 15 26 27 18 19 10 21 44 46 17 28 19 20 62 90 58 78 80 66 56 62 68 50 74 76 57 69 58 64 dakheeI need help with parts “c”, “d, and “e” thanks.PLEASE HELP WITH PARTS D,E,F,G.
- The value of the correlation r = (x,y) for the information would be: n = 8, Sum(x) = 609, Sum(y) = 504, Sum (x)^2 = 47995, Sum (y)^2 = 32954, and Sum (xy) = 395650 0.255 0.147 0.855 0.174(d) X = the length of a randomly selected rattlesnake Describe the set of possible values for the variable. О0, 1, 2, 3, ... O [0, 0) O (0, 0) О 1, 2, 3, ... State whether the variable is discrete. O discrete O not discrete (e) Z = the sales tax percentage for a randomly selected amazon.com purchase, where n = the total number of possible sales tax percentages for online purchases Describe the set of possible values for the variable. O [0, z,] O z, Z2, Z31 ..., Zn О 1, 2, 3, ..., п O [0, n] State whether the variable is discrete. O discrete O not discrete (f) Y = the pH of a randomly chosen soil sample Describe the set of possible values for the variable. О 1, 2, 3, ..., 14 О (0, 14] O [0, 14] О0, 1, 2, 3, ., 14 State whether the variable is discrete. O discrete O not discreteUse the formula to calculate the linear correlation coefficient for data with the following summary statistics:
- 29.-2.Suppose that the return R (in dollars per share) of a stock has the uniform distribution on the interval [-3,7]. Suppose also, that each share of the stock costs $1.50. Let Y be the net return (total return minus cost) on an investment of 10 shares of the stocks. Compute E(Y).3. Let X Pois(4). Find the distribution of Y = √X.
- (x₁,...,xn) be a data set, and denote its sample standard deviation with s. Let yį = ax; + b. (a) Show that sy = |a|sx, where sy is the sample standard deviation of y = (y₁,..., Yn). (b) Show that Median(y) = a. Median(x) + b. Let x = (c) If a > 0, can you write the relation between Q1(y) and Q1(x)? What happens if a < 0? Note: Q1(x) (or Q1(y)) denotes the first quartile of the distribution of the random variable x (or y)The value of the correlation r = (x,y) for the information would be: n = 8, Sum(x) = 609, Sum(y) = 504, Sum (x)^2 = 47995, Sum (y)^2 = 32954, and Sum (xy) = 395650 Choose answer from the following: a. 0.855 b.0.174If the random variable X follows the uniform distribution U= (0,1) What is the distribution of the random variable Y= -2lnX. Show its limits.
