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3 years ago

A random number generator generates numbers from 1 to 10. What is the probability that the number generator generates a 3 ?

Mathematics

2 answers:

AveGali [126]3 years ago

7 0

Answer:

1/10

Step-by-step explanation:

qaws [65]3 years ago

7 0

The probability is that it will be 1/10

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PLEASE HELP ME! I will mark you as a BRAINLIST!!

disa [49]

The answer is -15

See the attached image for the steps on how I got that answer.

8 0

3 years ago

A Confidence interval is desired for the true average stray-load loss mu (watts) for a certain type of induction motor when the

Vaselesa [24]

Answer:

A sample size of 35 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the width W as such

$W = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large must the sample size be if the width of the 95% interval for mu is to be 1.0:

We need to find n for which W = 1.

We have that $\sigma^{2} = 9$ , then $\sigma = \sqrt{\sigma^{2}} = \sqrt{9} = 3$ . So

$W = z*\frac{\sigma}{\sqrt{n}}$

$1 = 1.96*\frac{3}{\sqrt{n}}$

$\sqrt{n} = 1.96*3$

$(\sqrt{n})^2 = (1.96*3)^{2}$

$n = 34.57$

Rounding up

A sample size of 35 is needed.

3 0

3 years ago

What is the answer of this 100 x 20 =

Rufina [12.5K]

100 x 20 = 2000

Explanation

100
X
20
——
2000

6 0

4 years ago

Read 2 more answers

Are 9x+15 and -9x-15 equivalent expressions

mixer [17]

Answer:

Step-by-step explanation:

Yes!

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3 years ago

X is 30% of 200, What is x? ( is/of = p/100) * Your answer

Inessa [10]

Answer:

30/100 *200/1= 6000/100=60

8 0

3 years ago