Answer:
0.456
0.324
Explanation:
The null and alternative hypothesis :
H0 : p = 0.40; HA :p < 0.40
Test statistic :
(Ph - P) / sqrt[(p*(1-p))/n]
Ph = X / n
X = 34 ; n = sample size = 80
Ph = 34 / 80 = 0.425
(0.425 - 0.4) / sqrt[(0.4(0.6)) / 80]
0.025 / sqrt(0.003)
0.025 / 0.0547722
Test statistic = 0.4564359
Test statistic = 0.456
Using the P-value from Zscore calculator :
Significance level of 95% ; one tailed
Z statistic value = 0.456
P value = 0.324195
= 0.324 ( 3 decimal places)
Answer:
First definition:
- Duru's definition: A line segment is a line connecting two endpoints
⇅
- Teacher's comment: What you've written is true, but it isn't a correct definition. A ray would also fit your defenition
Second definition:
- Oliver's definition: A line segment is when three points are all on the same line.
⇅
- Teacher's comment: Were you thinking of the team collinear?
Third definition:
- Carlos' definition: A line segment is<u> part of a line,</u> not the whole thing.
⇅
- Teacher's comment: I think you have the right idea, but you need to be more careful with your language.
Explanation:
A line segment is <u>part of a line</u> that connects points. It limited consequently, it has length.
- Duru's definition: A line segment is a line connecting two endpoints
It is missing that it is just a part of the line. A ray also connects two points but extends infinetly in one direction. Thus, Duru's definition is not so specific.
That justifies teacher's comment:
- Teacher's comment: What you've written is true, but it isn't a correct definition. A ray would also fit your defenition
Second definition:
- Oliver's definition: A line segment is when three points are all on the same line.
The constraint of a line segment to three points all on the same line corresponds to collinear points. Two points always form a line,, but three points lie on a line only in they are collinear.
That justifies, theacher's comment:
- Teacher's comment: Were you thinking of the team collinear?
Third definition:
- Carlos' definition: A line segment is part of a line, not the whole thing.
Mathematicall language is formal. You must use precise words. An expression as 'whole thing" is not formal.
That justifies teacher's comment:
- Teacher's comment: I think you have the right idea, but you need to be more careful with your language.
Answer:
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Answer:
i think it is D Beaker A is used as an experiment to see the effects of air on limestone. Beaker B is used as an experiment to determine the effects of plain water with a neutral pH on limestone. Beaker C is used as an experiment to determine how acid affects limestone. Beaker D is used as a second experiment to determine how acid of a higher concentration affects limestone compared to acid of a lower concentration. There are no controls in this experiment because a controlled experiment was not practical for this situation.
Explanation:
