Question 4
r = 0.903
Question 5
ß1 =
ß1 =
ß1 = 0.70
Question 6
r = - 0.95
Question 7
ß1 =
ß1 =
ß1 = - 0.086
Question 8
Question 4 1 pts Suppose a experiment is conducted to study the relationship between the percentage...
Part A A marketing manager wishes to determine whether a relationship exists between the number of cereal boxes (Y) sold at the company's retail store and the number of clerks on duty (X) per day. The sample data below will be used to examine this empirical problem. Calculate the slope of the regression line. X Y 3 4 2 4 2 2 1 2 a. 0 b. 1 c. 2 d. None of the above Part 2 Calculate the Y-intercept...
3. (20 pts) Suppose that we have 4 observations for 3 variables y , x\, X2 and consider a problem of regressing y on two (qualitative) variables x\, xz. Data y (Income) x (Gender) X2 (Management Status) obs no. Female None 2 Male None 3 Female Yes 4 Male Yes Y4 To handle the qualitative variables x\, x2, we define dummy variables z1, 22 as Male for for 1, 1, T2= Yes Z1= Z2= -1 for for 1 1 =...
orrect Question 7 0/1 pts The amounts of 6 restaurant bill x (in dollars) and the corresponding amounts of the tips y (in dollars) are given below Bill 32.98 49.72 70.29 97.34 43.58 52.44 Tip 4.50 5.28 10.00 16.00 5.50 7.00 The regression equation is ý = 0.19.2 - 2.73, and the coefficient of determination r2 = 0.97. Based on the given r, which of the following conclusions may be made? Hint: Correlation is r, we are given p2. Thus...
Question 5 1 pts You are studying a population of palm trees and you observe that there are two alleles for frond shape. Allele 1 codes for rounder fronds and allele 2 codes for squarer fronds. Allele 2 is at a frequency of 30% of the population. What should be the frequency of allele 1? O 0.30 O 0.50 0 0.60 O 0.70 Question 6 1 pts You are studying a population of guppies and you observe that there are...
Question 7 1 pts Which of the correlation values represent a perfect linear relationship between x and y? .05 0 1 100 -1 Question 8 1 pts Match the correlation coefficient to its variable. population correlation [Choose ] sample correlation [Choose)
Need # 4, 5, 6, 7, & 8 Please!! QUESTION 4 A stuly wants to look at the correlation between sugar consumption and the development of cavities. The table below shows the average daily'întake of sugar (g) and the total number of cavities per patient over the one-year study period. Daily Sugar Intake Number of Cavities (M 30 40 150 90 75 25 110 What is the sample correlation cofficient given 2. ,-1128214 212and Ze-0-)-1307 ? a-0.33 b.0.70 QUESTION S...
Question 1 1 pts question 1- based on the sample data summarized by the following information: n = 5, L r = 25, x2 = 165 Sy=24, y = 134, ry=144 1<x<9 1. Compute the linear correlation coefficient r- 0.875 0.635 0.576 O 0.738 0.925 Question 2 1 pts 2. The least squares regression line equation for this data should be 0.6.0 + 1.8 y = -0.63 +1.8 O j = 0.62 - 1.8 y = -0.6 - 1.8 Question...
Question 4 1 pts Suppose that we are given the following model, where x1 and 2 are quantitative: E(y) = Bo + B121 + B2X2 + B3 21 22 What is the slope for x1 when x2 - 0? OBB ОВ,
please help timed quiz Find Lease Squares Regression Line (LSRL) equation for the following five- point data set step by step х 2. 6 8 10 у 1 2 3 4 [Select] < x = 22= [Select] < Ey= [Select ] < y2 = [Select) xy [Select ] [ Select) 72 [Select) y n2 y = $y = [Select] < SSxx = 22 - 1 ( x)2 = (Select] SSxy = { xy - 1(Ex) (y) = (Select] < SSyy...
A small study is conducted involving 10 infants to investigate the association between gestational age at birth, measured in weeks, and birth weight, measured in grams.: Cured Not Cured Drug 1 37 13 Drug 2 88 21 Total 125 34 Total 50 109 159 Table 1: Gestational age: 34.7, 36, 29.3, 40.1, 35.9, 40.8, 38.3, 37, 41.2, 39.8. Birth weight: 1895, 2030, 1440, 2835, 3115, 4013, 3174, 3625, 2289, 2845. . Find the correlation coefficient r of the gestational age...