Answer:
difference in the proportion = 0.0452
Step-by-step explanation:
x1 = 27, n1 = 193,
p1 = 27/193
p1 = 0.1399
x2 = 16, n2 = 169,
p2 = 16/169
p2 = 0.0947
a) The best estimate for the difference in the proportion of smokers, using male proportion minus female proportion is 0.0452. Male smokes more than females in given sample.
p1 - p2 = 0.1399 - 0.0947
p1 - p2 = 0.0452
Answer:
76
Step-by-step explanation:
Answer: 25% off
Step-by-step explanation:
1= 0.25 + 0.75
25% is off is the equivalency of multiplying the value of the original cost with 0.75.
20*0.75=15
It is not a <u>probability distribution</u>, as the sum of the probabilities is more than 1, thus, the correct option is No, considering that:
c) Since the sum of the probabilities is not equal to 1.
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For the sequence representing a probability distribution, it is needed that:
- All probabilities are between 0 and 1, that is, for all values of x, .
- The sum of all probabilities is 1, that is:
In this problem, the sum of the probabilities is:
<u>Sum is not 1,</u> thus it is not a probability distribution, and the correct option is:
c) Since the sum of the probabilities is not equal to 1.
A similar problem is given at brainly.com/question/24858659