Answer:
Regression lines can be used to predict values within the given set of data, but should not be used to make predictions for values outside the set of data. The correlation coefficient r measures the strength of the linear association between x and y.
Answer:
C.80
Step-by-step explanation:
37.9% of 192.3
=37.9/100 × 192.3
=0.379×192.3
=72.8817
≈80 (possible answer)
Answer: 0.8137
Step-by-step explanation:
As per given , we have

Sample size : n= 47
Let
be the sample mean o.
Then, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds will be :


[∵
]

[By using p-value calculator]

Hence, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds= 0.8137
Yes because -5 does equal -5
Answer:
2
Step-by-step explanation:
Y= mx +c
m is the gradient/slope
m = y2 - y1 / x2 - x1
m = 4-2 / 2-1
m = 2