Answer:
Option I
Step-by-step explanation:
Given that for families who live in apartments the scatterplot of the family’s income and the amount of rent they pay is approximately linear with a correlation of r = 0.60.
This implies that there is a positive association between income and rent paid.
Also since r is greater than 0.5, we can say that there is a moderately strong correlation.
All these can be interpreted as if income goes high, rent also would be higher.
The rise in rent due to income would be 0.6^2 =36% only
The regression line need not pass through 60% of income rent data points but it passes through average of the data points.
Hence only option I is right.
Answer: P(B|G) = 3/5 = 0.6
the probability that the guest is the friend of bride, P(bride | groom) is 0.6
Complete Question:
The usher at a wedding asked each of the 80 guests whether they werea friend of the bride or of the groom. The results are: 59 for Bride, 50 for Groom, 30 for both. Given that the randomly chosen guest is the friend of groom, what is the probability that the guest is the friend of bride, P (bride | groom)
Step-by-step explanation:
The conditional probability P(B|G), which is the probability that a guest selected at random who is a friend of the groom is a friend of the bride can be written as;
P(B|G) = P(B∩G)/P(G)
P(G) the probability that a guest selected at random is a friend of the groom.
P(G) = number of groom's friends/total number of guests sample
P(G) = 50/80
P(B∩G) = the probability that a guest selected at random is a friend is a friend of both the bride and the groom.
P(B∩G) = number of guests that are friends of both/total number of sample guest
P(B∩G) = 30/80
Therefore,
P(B|G) = (30/80)/(50/80) = 30/50
P(B|G) = 3/5 = 0.6
It would be nine dollars after she pays her friend back and gets her allowance
Answer:
4/3
Step-by-step explanation:
12/3=4
9/3=3
