All categories

3 years ago

Consider the example below. Explain in your own words why the equation is wrong. (4^-2)^2=1/16

1 answer:

6 0

The above equation is false because it equals to 1/256. If the exponent outside of the parenthesis was removed, the equation would be correct.

You might be interested in

It is known that 5% of the population over the age of 30 in a city is a university graduate. Among the 100 people chosen randoml

Novosadov [1.4K]

Answer:

A) 1/3200000

B) 19/20

Step-by-step explanation:

Percentage population of graduates = 5

Proportion of graduates from 100 random samples = percentage × number of samples

Proportion of graduates = 0.05 × 100 = 5

Probability of having 5 graduates among the 100 random samples:

P(1 graduate) = possible outcome / total required outcome

P(1 graduate) = (5 / 100) = 1/20

P(5 graduates) = (1/20)^5

P(5 graduates) = 1/3200000

Probability of never being a graduate = (1 - probability of being a graduate)

Probability of never being a graduate = ( 1 - (1/20)) = 19/20

5 0

3 years ago

How are volatility and risk related in an investment?

Semenov [28]

The answer is B
hope this helps

5 0

3 years ago

Read 2 more answers

A professor believes the students in a statistics class this term are more creative than most other students attending the unive

djverab [1.8K]

Answer:

Correct option: B

Step-by-step explanation:

The professor can perform a One-mean t-test to determine whether the average score of the students in his class is more than the average score of all the students attending university.

A t-test will be used instead of the z-test because the population standard deviation is not provided instead it is estimated by the sample standard deviation.

The hypothesis for this test can be defined as follows:

H₀: The average score of the students in his class is not more then the entire university, i.e. μ ≤ 35.

Hₐ: The average score of the students in his class is more then the entire university, i.e. μ > 35.

Given:

$\bar x=40\\SE_{\bar x}=1.63$

The test statistic is:

$t=\frac{\bar x-\mu}{SE_{\bar x}}=\frac{40-35}{1.63}=3.0674\approx3.07$

Thus, the correct option is (B).

4 0

2 years ago

This week, Sam spent 2 3/4 hours on his homework. This was 2 2/3 times less than last week. How many hours did he spend on homew

Semenov [28]

Answer:

7.315 hours

Step-by-step explanation:

3 0

2 years ago

Use a graphing calculator to find the solution to the situation. Lucy needs to hire a host. Host A is offering his services for

olga55 [171]

At approximately 4.5 hours.
15.75x + 70 = 13.25x + 81
15.75x - 13.25x = 81 - 70
2.5x = 11
x = 4.4
found to the nearest tenth 4.5

6 0

3 years ago