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Alla [95]
2 years ago
5

An alien empire is considering taking over planet Earth, but they will only do so if the portion of rebellious humans is less th

an 10%. They abducted a random sample of 400 humans, performed special psychological tests, and found that 14% of the sample are rebellious Let's test the hypothesis that the actual percentage of rebellious humans is 10% versus the alternative that the actual percentage is higher than that The table below sums up the results of 1000 simulations, each simulating a sample of 400 humans, assuming there are 10% rebellious humans. According to the simulations, what is the probability of getting a sample with 14% rebellious humans or more?
1.5%
2%
0.3%
0.7%

Let's agree that if the observed outcome has a probability less than 1% under the tested hypothesis, we will reject the hypothesis.

We cannot reject the hypothesis
We should reject the hypothesis​
Mathematics
1 answer:
8090 [49]2 years ago
6 0

Step-by-step explanation:

How was the government able to make children go to residential school?

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If you flip a coin 4 times, what is the best prediction possible for the number of times it will land on tails?
allochka39001 [22]

Answer:

2

Step-by-step explanation:

Each time you flip a coin, there is a 50% change of it landing on tails.  So half the time you should get a tails.  

Half of 4 is 2, so you will likely get 2 tails.

7 0
3 years ago
Show answer in lowest terms. 3 1 /4 - 1 3/16=
SpyIntel [72]
3 - 1 = 2
1/4 - 3/16 = 4/16 - 3/16 = 1/16

answer is : 2 1/16 (in mixed number) or 33/16 (in improper fraction)
4 0
3 years ago
The​ half-life of radium is 1690 years. If 20 grams are present​ now, how much will be present in 250 ​years?
Aneli [31]

Answer:

  18.05 g

Step-by-step explanation:

The multiplier of the initial quantity is ...

  (1/2)^(t/1690)

so, for t=250, this becomes ...

  (1/2)^(250/1690) ≈ 0.902545

Then the quantity remaining of the initial 20 g is ...

  (20 g)(0.902545) ≈ 18.05 g

3 0
3 years ago
The length of a rectangular is 5/2 unites greater then twice its width if it’s width w which expression gives the perimeter of t
strojnjashka [21]

If width is w the length can be represented as 5/2+2w.

Formula for perimeter is 2l + 2w

So it would be 2w + 2(5/2 + 2w)

OR 2w + 5 + 4w

OR 6w + 5



See if this helps ;)

5 0
3 years ago
Mathematics Areas and perimeters ​
sweet-ann [11.9K]

Answer:

54.5 Sq. cm

Step-by-step explanation:

<em>area of a right angled triangle = 1/ 2 × base × height </em>

(here, the base is 8 and height is 6)

= 1/ 2 × 6 × 8

= 4 × 6

<u>= 24 Sq. cm</u>

<em>area of a circle</em> = \pi r²

(r is the radius that is diameter/ 2, and the value of \pi is 3. 14)

  • r = 10/ 2 = 5 cm

= 3. 14.× (5)²

= 3.14 × 25

<u>= 78.5 Sq. cm</u>

area of the shaded region = area of Circle - area of triangle

= 78.5 - 24

<h3>= 54.5 Sq. cm</h3>

that is option 3

7 0
2 years ago
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