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3 years ago

One third divided by 4

Mathematics

2 answers:

MA_775_DIABLO [31]3 years ago

7 0

Answer:

1/12

I used keep change flip.

mamaluj [8]3 years ago

4 0

Answer:

1/12 or 0.083333333333

Step-by-step explanation:

Multiply by reciprocal

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A gambler has a coin which is either fair (equal probability heads or tails) or is biased with a probability of heads equal to 0

yawa3891 [41]

Answer:

(a) 0.1719

(b) 0.3504

Step-by-step explanation:

For every coin the number of heads follows a Binomial distribution and the probability that x of the 10 times are heads is equal to:

$P(x)=\frac{n!}{x!(n-x)!}*p^x*(1-p)^{10-x}$

Where n is 10 and p is the probability to get head. it means that p is equal to 0.5 for the fair coin and 0.3 for the biased coin

So, for the fair coin, the probability that the number of heads is less than 4 is:

$P(x$

Where, for example, P(0) and P(1) are calculated as:

$P(0)=\frac{10!}{0!(10-0)!}*0.5^0*(1-0.5)^{10-0}=0.0009\\P(1)=\frac{10!}{1!(10-1)!}*0.5^1*(1-0.5)^{10-1}=0.0098$

Then, $P(x$ , so there is a probability of 0.1719 that you conclude that the coin is biased given that the coin is fair.

At the same way, for the biased coin, the probability that the number of heads is at least 4 is:

$P(x\geq4 )=P(4)+P(5)+P(6)+...+P(10)$

Where, for example, P(4) is calculated as:

$P(4)=\frac{10!}{4!(10-4)!}*0.3^4*(1-0.3)^{10-4}=0.2001$

Then, $P(x\geq4 )=0.3504$ , so there is a probability of 0.3504 that you conclude that the coin is fair given that the coin is biased.

7 0

3 years ago

What is the value of x? pleeaseee answer!!!

BabaBlast [244]

If you look up "angles of 7 sided polygon" it would give a result of how many degrees polygons with 7 sides such as this one above would equal to. It's important to know that when finding x angles within.

7-sided polygons = 900 degrees in total

Since all the other angles except x are given, we can add all those up and set it equal to 900. So it would look like this:

$139+121+125+126+158+120+x=900$

Simply solve for x now.

$139+121+125+126+158+120+x=900\\ \\ 789+x=900\\ \\ x=900-789=111$

So x = 111 degrees.

Hope this helps!

5 0

3 years ago

23X67 Estimate then find the prouduct

kumpel [21]

To estimate, you would usually round to a significant figure
so, 20* 70=1400

The actual answer is 1521, so we know we are close

3 0

3 years ago

Which expression is equivalent to 8-(6r+2)?

nlexa [21]

Answer:

its A -6r+6

Step-by-step explanation:

ur very welcome

8 0

2 years ago

Read 2 more answers

What's the answer ?????? Someone please help

Doss [256]

A´(-2,-4) B´(-3,-7) C´(-1,-8) D´(1,-6)

5 0

3 years ago