Answer:
B.) 0.708
Step-by-step explanation:
Given the following data :
Cost of advertising (in thousands of $) (x) :
9
2
3
4
2
5
9
10
Number of product sold (in thousands of $) (y) :
85
52
55
68
67
86
83
73
Using the pearson Coefficient of correlation calculator, the correlation Coefficient obtained for the data above is : 0.7077 = 0.708 (3 decimal places).
This depicts a strong positive correlation between the cost of advertising and the number of product sold as the correlation Coefficient is both positive and close to 1. This means payibg a high cost for advert will almost usually result in a corresponding increase in the number of products sold.
is
real and
rational.
For it to be an integer, whole, or natural number, it would have to be a whole number. Since it can be written as a repeating decimal (.6666666...) it is not irrational either.
The answer is "c. continuous probability distribution."
"Continuous" means it is a subset of the real numbers set: it can take any value in a specified range. For example, if you break at random a stick with a given length of 12 cm, and then measure the shortest piece, you can get any value in the range (0 cm, 6 cm). This is a continuous random variable.
A random variable is said to be "discrete" if it can only take values from a finite (or countably infinite) set. For example, if you roll a dice, you can get only 1, 2, ..., 6. But you cannot get any vaue in the range [1, 6], because the value must be an integer (e.g., you cannot get the vaue 2.5). This is a discrete random variable.
A somewhat technical explanation:
- A random variable is a mapping from a event space to a number set: it associates a number (a value of the variable) with every event.
- The random variable is said to be continuous if it maps events to numbers from a subset of the set of real numbers.
- The probability distributions corresponding to continuous random variables are called continuous probability distributions.
Answer:
y = -3x + 2
Step-by-step explanation:
First we find the slope:
(11 - (-4)) / (-3 - 2) = 15/-5 or -3
Now we use this formula and solve for y to get slope-intercept form
<em>y - y1 = m(x - x1)</em>
y - (-4) = -3(x - 2)
y + 4 = -3x + 6
y = -3x + 2
The value of x from the given expression is 5/6
<h3>Expansion of equation</h3>
Given the expression to expand expressed as:
15 = 3/5(6x + 20)
We are to determine the value of x
15(5) = 3(6x + 20)
Expand
75 = 18x +60
Collect like terms
18x = 75 - 60
18x = 15
x = 15/18
x = 5/6
Hence the value of x from the given expression is 5/6
Learn more on equation here: brainly.com/question/13763238
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