Please answer the questions 46-50, thanks u6. The sampling distribution of p, P,
ID: 3325652 • Letter: P
Question
Please answer the questions 46-50, thanks
u6. The sampling distribution of p, P, is approximated by a a. normal distribution b. 1-distribution with n: +n degrees of freedom c. t-distribution with n +n 1 degrees of freedom d. t-distribution with n, + n +2 degrees of freedom Exhibit 9 Below you are given information on annual income and years of college education Income (In Thousands) 28 40 36 28 48 Years of College Refer to Exhibit 9. The intercept of the regression line is a. 25.6 b. 26.5 47. d. 2 Refer to Exhibit 9.The scope is 48. b. 4.8 c. 5.2 Refer to Exhibit 9. With 6 years of college, what would be the estimated income? a. 31,200 b. 56.8 c. 56,800 d. 31.2 A regression analysis between sales (Y in $1000) and advertising (X in dollars) resulted in the following equation. Y=30,000+4x The above equation implies that an a. increase of $4 in advertising is associated with an increase of $4.000 in sales b. increase of S10 in advertising is associated with an increase of $40 in sales c. increase of $10 in advertising is associated with an increase of $40.000 in sales d. None of the above 49. 50. Exhibit 10 Given below are five observations collected in a regression study on two variables, x fndependent variable, expressed in units of $10) and y (dependent variable expressed in units of $200), Significance F 0.006 MS F Regression Residual 6.4 0.4 6.8 Total Coefficients Standard Errer tStat P-value 6.000 -0.800 0490 0.115 12.247 0.00 -6.9280.006 Intercept 51. Refer to Exhibit 10. The intercept value is C. d. None of the aboveExplanation / Answer
Solution
46) option (a) normal distribution
The sampling distribution of p1- p2 is approximately normal as long as the proportions are not too close to 1 or 0 and the sample sizes are not too smal.
47) using excel,
intercept = 25.6 option (a)
48) Slope = 5.2 option (c)
49) y = intercept + slope*x
y = 25.6+5.2*6 = 56.8 option (b)
50) option (c)