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egoroff_w [7]
3 years ago
10

I have an unlimited supply of standard 6-sided dice. What's the fewest number of dice that I have to simultaneously roll to be a

t least 90% likely to roll at least one 6?
You may use a calculator to help you with the computations if you like -- in fact you'll almost certainly want to -- but your final answer should be a positive integer, and you should explain how you got it.
Mathematics
2 answers:
Bess [88]3 years ago
6 0

What does the "In" mean when, for example, you say (In5/6)

katrin2010 [14]3 years ago
4 0
P( rolling 6) = 1/6
P(NOT rolling 6) = 5/6
P(AT least one 6) = 1 - 5/6
P(After x number of trials to obtain at least one 6) = 0.9
Then 0.9 = 1 - (5/6)ˣ

0.9 - 1 =  - (5/6)ˣ
- 0.1 =  - (5/6)ˣ   → (5/6)ˣ = 0.1

x(ln 5/6) = ln(0.1)

x = ln0.1) / ln(5/6)  = 12.63 ≈ 13 times

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Solve:<br> |x -0.5| &lt; 12
never [62]
Your answer should be -11.5
6 0
3 years ago
PLEASE HELP W THIS I WILL Give YOU THE BRAINLIEST PLEASE ! - What does it mean to have a skewed distribution? What causes a skew
nata0808 [166]

Answer:

Explained below

Step-by-step explanation:

A) A skewed distribution in a dataset is when the median is not equal to the mean in such a manner that the bell curve is tilted to the left or right.

B) If in a data set, if there are outliers which are extremely large or extremely small in comparison to other values in that same dataset, then we can say that such a curve will be pulled towards the outlier and thus the distribution is skewed.

Also, if the curve is inclined to the left, it means there are few extreme values to the left and it is negatively skewed.

Similarly, if the curve is inclined to the right, it means there are few extreme values to the right and is positively skewed.

C) Example of a research question is;

If in a developed country where the poverty level is about 0%, if we collect the data of income of the households, we will discover majority of people with average income and very few people with extreme high levels of income. This condition means the data is positively skewed.

4 0
2 years ago
A grasshopper jumps off a tree stump. The height, in feet, of the grasshopper above the ground after t seconds is modeled by the
klasskru [66]

Answer:

Hence, Grasshopper will land on the ground after 1.5 sec.

Step-by-step explanation:

It s given that:

The height, in feet, of the grasshopper above the ground after t seconds is modeled by the function:

h(t)=-t^2+\dfrac{4}{3}t+\dfrac{1}{4}

Now we are asked to find:

In how many seconds will the grasshopper land on the ground?

i.e. we have to find the value of t such that h(t)=0

i.e.

-t^2+\dfrac{4}{3}t+\dfrac{1}{4}=0

i.e. we need to find the roots of the given quadratic equation.

On solving the quadratic equation or plotting it's graph we could observe that the point where h(t)=0 are:

t=-\dfrac{1}{6},t=\dfrac{3}{2}

As time can't be negative hence we will consider:

t=\dfrac{3}{2}=1.5sec

Hence, grasshopper will land on the ground after 1.5 sec.

4 0
3 years ago
I will mark you brainiest if you can answer this
Korvikt [17]

Answer:

12^4 or 20736

Step by Step Instructions:

really all you have to do is subtract the exponents. 12^7-12^3=12^4, if you want to expand the numbers you can do it that way too. 12^7=35831808, 12^3=1728, 35831808/1728=20736 (which is the same as 12^4)

4 0
2 years ago
Select all the equations that have the same solution as the equation 3x – 12 = 24
Stolb23 [73]
Your answer will be D and E
7 0
3 years ago
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