Answer:
If we define the random variable X ="time spend by the students doign homework"
And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:
Null hypothesis:
Alternative hypothesis:
And they wnat to use a sample size of n = 100 and a significance level of 0.05
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
If we define the random variable X ="time spend by the students doign homework"
And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:
Null hypothesis:
Alternative hypothesis:
And they wnat to use a sample size of n = 100 and a significance level of 0.05
Answer: 267.7
I just did the math and I got this answer
There’s no picture attached!
but the first would point down, and passes through the y axis (up and down) at positive 3
the second points down but goes through the y axis at negative 3 (-3)
the third points up and goes through the y axis at positive 3
the fourth points up and goes through the y axis at negative 3 (-3)
Answer:
Step-by-step explanation:
The circumference of a circle is also the perimeter of the circle. The formula for determining the perimeter of a circle is expressed as
Perimeter = 2πr
Where
r represents the radius of the circle.
π is a constant whose value is 3.14
Therefore,
Circumference = 2 × 3.14 × 4 =
25.1 feet rounded to the nearest 0.1
The formula for determining the area of a circle is expressed as
Area = πr²
Area = 3.14 × 4² = 50.2 square feet rounded to the nearest 0.1
Answer:
4.19
Step-by-step explanation:
just use the formula 2pir^2