The probability that any one adults from the sample dines out more than once per week is
. Taking two from the population without replacement sets the stage for an experiment involving a binomial distribution, with success probability
and
trials. So within this sample of 2 individuals, we have the probability mass function
a.
b.
c.
d. The event with the lowest probability can be considered the most unusual. Out of the three above, that would be the case that both adults dine out more than once per week.
Answer:
C. Approximately normal
Step-by-step explanation:
We know that when we have, np≥10, and n(1−p)≥10, and both of these are true, where n is the sample size, and p is the sample of proportions, the sampling proportions of sample distributions, will be normal in shape.
Expected successes : np=125(0.88)=110≥10
Expected failures : n(1−p)=125(1−0.88)=15≥10
The difference between a number b and thirty-seven
We have an equation: ?/17= 5/8
Cross multiply:
8*?= 5*17
⇒ ?= 5*17/8= 10 5/8
We only need 10 5/8 ft~
Answer:
a) Qualitative
b) Qualitative
c) Quantitative
d) Quantitative
Step-by-step explanation:
A variable is quantitative if it assumes numerical values, for example 1,2,3.
If it assumes "labels", for example good or bad, it is qualitative.
(a) The occupation of your neighbors. Answer:
Labels. Teacher, trainer, athlete, ...
So it is qualitative
(b) The martial status of your coworkers. Answer:
Labels: Married, single,..
So it is qualitative
(c) Your college GPA. Answer:
Numeric, 2,3,...
So it is quantitative
(d) The amount of bacteria on a piece of moldy bread
Numeric, 0.5mm, etc
So it is quantitative