Answer:
It is an unusual result contradicting the national survey.
Step-by-step explanation:
National survey showed 44% of college students who drink.
The professor's survey showed that 96/244 = 39% drink.
The professor's survey deviated from the national survey is 5% (44% - 39%) representing about 0.25% (5% squared) variance.
Standard deviation is the spread of a set of numbers from their mean. In other words, it measures how far an observed value is from the mean. It can be calculated by getting the square root of the variance.
Answer:
f(x) = -0.5x
Step-by-step explanation:
.25*8 = 2 which is really a slope of 2/1
place a negative in front flips it over the y axis and flipping the slope flips it over the x axis.
The answer would be 9.9
Pemdas
9.7-2.4= 7.3
2.6+7.3 = 9.9
You need to set it up like this: Initial amount ( 1 - Depreciation Rate) ^ Time in years. So: 5000(1-0.18)^4 = 5000(0.82)^4=2260.6088, rounded to the nearest cent is $2260.61.
Answer:
Step-by-step explanation:
<u>Probabilities</u>
When we choose from two different sets to form a new set of n elements, we use the so-called hypergeometric distribution. We'll use an easier and more simple approach by the use of logic.
We have 6 republicans and 4 democrats applying for two positions. Let's call R to a republican member and D to a democrat member. There are three possibilities to choose two people from the two sets: DD, DR, RR. Both republicans, both democrats and one of each. We are asked to compute the probability of both being from the same party, i.e. the probability is
Let's compute P(DD). Both democrats come from the 4 members available and it can be done in different ways.
For P(RR) we proceed in a similar way to get different ways.
The total ways to select both from the same party is
The selection can be done from the whole set of candidates in different ways, so