Step-by-step explanation:
Hence,Your answer is 24
Find the surface area of this rectangular pyramid. 4.5 in 3 in 4 in 5 in
2 answers:
Answer:
The surface area is 31.75 inches
Explanation:
To find the area of a triangle, we use the formula , or <em>base · height ÷ 2</em>
Using this formula, we find that the area of the front and back triangles is 10
On the side triangles, the formula shows the area to be 6.75
The base, which has a width of 5 and a length of 3, is 15
Add the numbers together and you get a total surface area of 31.75 inches
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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