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Alina [70]
3 years ago
13

SOMEONE ANSWER THIS ASAP PLEASEEEE!!!

Mathematics
1 answer:
Charra [1.4K]3 years ago
3 0

M is the midpoint of AC.

So, MA = MC

M is the midpoint of BD.

So, MB = MD

Also, since the midpoints of AC and BD coincide,

AC bisects BD and BD bisects AC.

Hence, our conjecture is MA = MB = MC = MD.

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A psychological experiment was conducted to investigate the length of time (time delay) between the administration of a stimulus
aleksklad [387]

Answer:

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

The significance level for this test is 0.05.

Step-by-step explanation:

In this case, we want to prove if there is significant evidence that the mean differs from 1.6 seconds. That is the same as having evidence to reject the the hypothesis H_0:\mu= 1.6 (the null hypothesis always have the equal sign).

We have to test the null hypothesis

H_0:\mu= 1.6

The significance level for this test is 0.05

Calculation of the t-statistic:

t=\frac{M-\mu}{s/\sqrt{n}} =\frac{2.2-1.6}{0.57/\sqrt{36}} =\frac{0.6}{0.063}= 9.47

If we look up in a t-table for t=9.47 and df=(36-1)=35, we get this value appears with a probability of zero. A large number like that is very unlikely to happen.

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

6 0
3 years ago
Please help with this
GaryK [48]

Answer:

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Step-by-step explanation:

4 0
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How to prove triangles are congruent
Slav-nsk [51]

Answer:

Step-by-step explanation:

If two angles and the non-included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.

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Cloud [144]

Represent as an expression:

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Plug 5 for x and solve:

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Solution: B. 42

I hope I helped you with your solution! If you could give me brainliest, I would be very thankful!

7 0
3 years ago
Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator. 16 min to 72 min​
telo118 [61]

Answer:

2/9

Step-by-step explanation:

16/72 is the same thing as 2/9, just simplified. If you make 16 to 72 in a fraction you get 16/72. You divide them with their GCF which is 8. 16 divided by 8 is 2 and 72 divided by 8 is 9. Therefore the answer is 2/9.

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