2 years ago

Simplify

Mathematics

1 answer:

Alexandra [31]2 years ago

5 0

Answer:

Step-by-step explanation:

u just have to think about it

You might be interested in

Please help with this question!!!!

Leni [432]

Answer: 24.63

Step-by-step explanation: To find the area of a circle you square the radius (by 2) and then multiply it by pie.

8 0

3 years ago

Which of the following amounts is greater than 48 inches? Select all that apply.

Evgesh-ka [11]

Answer:

A,B,C, and E

Step-by-step explanation:

5 0

2 years ago

The altitudes of a triangle _______ go through the vertices?

Masteriza [31]

Never because I had this question and saw it on khan

7 0

3 years ago

Read 2 more answers

3.-8= (2.8) - 8<br> is it true or false

wel

Answer: false

Step-by-step explanation:

7 0

3 years ago

Consider a binomial distribution of 200 trials with expected value 80 and standard deviation of about 6.9. Use the criterion tha

mote1985 [20]

Answer:

The correct answer is option 'a' : 120 is more than 2.5 standard deviations above the expected value.

Step-by-step explanation:

For an exponential distribution we have

The expected value μ = 80

No of trails n = 200

Thus we have

$p=\frac{80}{200}=0.4$

The deviation is related to expected value and probability as

$\sigma =\sqrt{np(1-p)}\\\\\therefore \sigma =\sqrt{200\cdot 0.4\cdot (1-0.4)}=6.9$

Thus the values between the given deviation is

$x_{1}=80-2.5\times 6.9=62.75\\\\x_{2}=80+6.9\times 2.5=97.25$

Now since 120 successes are out of the range of [62.75,97.25] thus 120 is more than the expected value.

5 0

3 years ago