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hjlf
3 years ago
10

The answer of this  3*(-7) is  -21

Mathematics
1 answer:
irinina [24]3 years ago
6 0
Yes, you are correct. The answer of 3*(-7) = -21
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We have five samples of data: sample A with 30 successes of 50 cases, sample B with 600 successes of 1000 cases, sample C with 3
Len [333]

Answer:

C with 3000 successes of 5000 cases

Step-by-step explanation:

In test statistics the number of samples goes a long way in determining the result of a test.

Using the z score formula

Test statistic z score can be calculated with the formula below;

z = (p^−po)/√{po(1−po)/n}

Where,

z= Test statistics

n = Sample size

po = Null hypothesized value

p^ = Observed proportion

Therefore the z score is directly proportional to the square root of the sample size.

z ∝ √n

The higher the sample size, the higher the z score, the higher the evidence of confirming the alternative hypothesis.

Since the all have the same proportion (0.6), and options c has the highest sample size (5000 cases), it will give the strongest evidence for the alternative hypothesis

6 0
3 years ago
At a dog competition, a dog is awarded 10 points if it runs through 4 pipes, makes 10 jumps, and walks on 2 beams. If Roofy gets
choli [55]

Answer:

Butch should be awarded with 9,2 points

Step-by-step explanation:

Roofy gets 9 points out of 10 missing only a pipe, that means that each pipe is awarded with 1 point

Ralph gets 7 points out of 10 missing one pipe ( 1 point ) and 2 points missing a beam

So points are awarded as follows

1 point by pipe              then 4 points   for    4 pipes

2 points by beam         then  4 points  for     2 beams

We just have 2 points to award 10 jumps then each jump is awarded by 0,2 points

Finally as Butch missed 4 jumps, Butch should be awarded with 9,2 points

8 0
3 years ago
One number is 2 times the other number. The sum of the numbers is<br> 150. Find the numbers.
Inessa [10]

Answer:

x = 50; 2x = 100

Step-by-step explanation:

x + 2x = 150

3x = 150

x = 50

2x = 2(50)

2x = 100

4 0
3 years ago
Susan has a pencil that is 3 centimeters shorter than this string. how long is the pencil? the thing is 11 centimeters
inna [77]
It is a total of 8 centimeters long
4 0
4 years ago
Nigel has 3/4 of a chocolate candy bar that he wants to share equally among his friends Cameron, Devin, and Tyrek. How much will
Andrei [34K]

Answer:

3/4 divided 4=16 or 0.1875

Step-by-step explanation:

3/4 divided by 4 is easy all you would do is multiply the bottom number by what you are trying to divide which is 4 so you do 4x4 which is 16

3 0
3 years ago
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