Answer:
The fourth one
Step-by-step explanation:
Only the first one x and y interval 1, 2. The rest aren't linear.
15, 30, 45, 60, 75, 90, ....
Answer:
Step-by-step explanation:
given that in a study conducted in 1980, researchers calculated the height difference between couples with kids in the UK. They found that the height difference between husband and wife follows a normal distribution with mean 5.6 inches and standard deviation equal to 3.7 inches.
a) The difference in height for 68% middle of couples in normal distribution is within 1 std dev from the mean
i.e. between (5.6-3.7, 5.6+3.7) = (1.9, 9.3) inches
b) P(x >5) = P(Z>0.6/3.7) = 1-0.5644= 0.4356
Percent = 43.56%
c) P(|x|<1) = P(-1<x<1) = F(1) -F(-1) = 0.0697
Using proportions, it is found that his tax rate is of 28.84%.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.
His tax rate is the proportion that the <u>deductions are of the total salary</u>, hence:
12,200/42,300 = 0.2884 = 28.84%.
Hence his tax rate is of 28.84%.
More can be learned about proportions at brainly.com/question/24372153
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