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3 years ago

Andy is done with part of a construction, as shown below.

Mathematics

1 answer:

musickatia [10]3 years ago

4 0

Answer: i believe it is D

Step-by-step explanation:

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Suppose you pay $1.00 to roll a fair die with the understanding you will get $3.00 back rolling a 4 or a 2, and nothing otherwis

Evgesh-ka [11]

On the presumption that it is a cubic die, on average you will not gain nor lose any money. Out of the six faces, 1/3 of them are a 5 or a 2. So 1/3 of the time, you will gain 3$, but will lose 1$ from the initial payment. 1/3 of 3$ is 1$, so on average, you will gain 1$, while losing 1$.
Another way of looking at it is to take the possible out comes, and add the gains/loses, and you will come up with 0$.
1.9K views
Related Questions (More Answers Below)

6 0

3 years ago

Whai si (3x+5) (x-2)

Vika [28.1K]

The answer is 3x squared -11x-10

3 0

2 years ago

use counters model to solve this problem.eva has 2 apples in her basket.She eats 1 apple and gives 1 to her friend.How many appl

barxatty [35]

A: She Has 0

E: she had 2 she ate one and gave one away

2 - 1 =1

1 - 1 = 0

3 0

3 years ago

Read 2 more answers

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systo

PIT_PIT [208]

Answer:

The estimate is

$52.02 < \mu < 55.78$

Step-by-step explanation:

From the question we are told that

The sample mean is $\ = x = 53.9$

The sample size is n = 24

The standard deviation is $\sigma = 5.6$

Given that the confidence level is 90% the level of significance is mathematically represented as

$\alpha = 100 - 90$

$\alpha = 10 \%$

$\alpha = 0.10$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table.The value is

$Z_{\frac{\alpha }{2} } =Z_{\frac{0.10 }{2} } = 1.645$

The reason we are obtaining critical value of $\frac{\alpha }{2}$ instead of $\alpha$ is because $\alpha$

represents the area under the normal curve where the confidence level interval ( $1 - \alpha$ ) did not cover which include both the left and right tail while

$\frac{\alpha }{2}$ is just the area of one tail which what we required to calculate the margin of error

NOTE: We can also obtain the value using critical value calculator (math dot armstrong dot edu)

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{ \sqrt{n} }$

substituting values

$E = 1.645 * \frac{5.6 }{ \sqrt{24} }$

$E = 1.880$

The estimate of how much the drug will lower a typical patient's systolic blood pressure(using a 90% confidence level) is mathematically represented as

$\= x - E < \mu < \= x + E$

substituting values

$53.9 - 1.880 < \mu < 53.9 + 1.880$

$52.02 < \mu < 55.78$

5 0

3 years ago

WILL MARK BRAINLIEST!!!!!! AND 20 POINTS!!!!!!

defon

you didn't include the graph

but i'm a guess c.

6 0

3 years ago