Answer:
40
Step-by-step explanation:
5 days temperature = 100
So the temperature have to add to 500
6 days temperature = 90
500 + ? = 540
?=40
So -56 -13 = -69
So the answer would be 69?
You didn’t show the options.
Answer:
We want to test that the percent is less than seventy-five so then the system of hypothesis are given by:
Null hypothesis:
Alternative hypothesis:
Step-by-step explanation:
Previous concepts
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".
Solution to the problem
For this case we can estimate the proportion of interest is given by:
We want to test that the percent is less than seventy-five so then the system of hypothesis are given by:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statisitc, and the is given by:
(1)
Answer:
Option C.
Step-by-step explanation:
Slope of the line passing through (1, 1) and (0, 2)
m =
m =
m = -1
Equation of the line passing through point (1, 1) and slope = -1,
y - y' = m(x - x')
y - 1 = (-1)(x - 1)
y - 1 = -x + 1
y = -x + 2
This piece of function is true for x ≤ 1
Similarly, slope of the line passing through two points (1, -1) and (2, -3),
m' =
= -2
Equation of the line passing through (1, -1) and slope = -2
y + 1 = (-2)(x - 1)
y + 1 = -2x + 2
y = -2x + 1
This piece of function is true for x > 1
Therefore, Option C. will be the answer.