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Delicious77 [7]
3 years ago
15

What is the definition of vertical angles

Mathematics
2 answers:
Illusion [34]3 years ago
4 0

Answer:

vertical angles

geometry the pair of equal angles between a pair of intersecting lines; opposite angles Also called: vertically opposite angles

Step-by-step explanation:

mestny [16]3 years ago
3 0

Answer:

each of the pairs of opposite angles made by two intersecting lines.Step-by-step explanation:

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A professor wishes to discover if seniors skip more classes than freshmen. Suppose he knows that freshmen skip 2% of their class
KIM [24]

Answer:

We conclude that seniors skip more than 2% of their classes at 0.01 level of significance.

Step-by-step explanation:

We are given that a professor wishes to discover if seniors skip more classes than freshmen. Suppose he knows that freshmen skip 2% of their classes.

He randomly samples a group of seniors and out of 2521 classes, the group skipped 77.

<u><em /></u>

<u><em>Let p = percentage of seniors who skip their classes.</em></u>

So, Null Hypothesis, H_0 : p \leq 2%   {means that seniors skip less than or equal to 2% of their classes}

Alternate Hypothesis, H_A : p > 2%   {means that seniors skip more than 2% of their classes}

The test statistics that will be used here is <u>One-sample z proportion</u> <u>statistics</u>;

                                   T.S.  = \frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }  ~ N(0,1)

where, \hat p = sample proportion of seniors who skipped their classes = \frac{77}{2521}

           n = sample of classes = 2521

So, <u><em>test statistics</em></u>  =  \frac{\frac{77}{2521} -0.02}{{\sqrt{\frac{\frac{77}{2521}(1-\frac{77}{2521})}{2521} } } } }

                               =  3.08

The value of the test statistics is 3.08.

Now at 0.01 significance level, <u>the z table gives critical value of 2.3263 for right-tailed test</u>. Since our test statistics is more than the critical value of z as 2.3263 < 3.08, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis</u>.

Therefore, we conclude that seniors skip more than 2% of their classes.

6 0
3 years ago
PLEASE HELP 
Rom4ik [11]
Its A, all y-values are less than -3x+5. also consider root by setting -3x+5=0

x=5/3 is positive so its the first one
3 0
3 years ago
Read 2 more answers
Can someone please help me with this
timofeeve [1]

Answer:

x= 6

Step-by-step explanation:

since both sides equal the same amount..

5x-7=3x+5

you plug it in through a calculator or work it out. if you dont know how to work it out, try the app <u>photomath</u><u>,</u><u> </u>it shows you solving steps :))

8 0
3 years ago
13 + 5x - 4y - 8<br> .<br> I need to simplify the expression
IrinaK [193]

Answer:

5+5x-4y

Step-by-step explanation:

6 0
3 years ago
Plz HELP will give extra points
jekas [21]
The mode is 44
The range is 3
The median is 44
The mean is 44
4 0
3 years ago
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