A scatter plot shows the relationship between two quantitative variables. Each of the six scatters plots pictured shows the least-squares regression line for the corresponding data set. Classify each scatters plot according to whether the least-squares regression line has a meaningful y y-intercept value.

Step-by-step explanation:

scatter plot D and scatter plot E do not have the meaningful y-intercept as these regression lines are crossing ( to be crossed from origin (0,0)

scatter plot A, B, C, and E have meaningful y-intercept as these regression lines are not crossing from origin (0,0)

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation: