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Otrada [13]
3 years ago
15

Let x be the number of successes throughout n independent repetitions of a random experiment having probability of success p=1/4

. determine the smallest value of n so that p(1<=x)>=0.7
Mathematics
1 answer:
Llana [10]3 years ago
6 0

To answer problems like this you have to use binomial:

P (x > 1) = 1 – p (0 < x < 1) > .7 

So:

1 – p (0) – p (1) > .7 

1 – (3/ 4) ^n – (3/ 4) ^n (n – 1 ) (1/ 4) > .7 

Therefore n > 5.185, and the smallest value of n so that we can satisfy the given condition is 6 (rounded up)

<span> </span>

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4 0
2 years ago
3. A table has a length of 3.4 meters and a width of 1.5 meters. Mang Jose painted the to portion approximately 3.75 m². What wa
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8 0
2 years ago
Nap ate 2/5 of the pizza Rowan ate 2/3 of the pizza that was left how much of the pizza did Rowan eat
kicyunya [14]

Answer:

Rowan ate \frac{2}{5} of the pizza

Step-by-step explanation:

Nap ate 2/5 of the pizza Rowan ate 2/3 of the pizza that was left how much of the pizza did Rowan eat?

Nap: \frac{2}{5} can be rewritten as \frac{6}{15}

Rowan: \frac{2}{3} can be rewritten as \frac{10}{15}

After Nap ate 2/5 of the pizza, there is 3/5 pizza left.

\frac{3}{5} can be rewritten as \frac{9}{15}

 

\frac{9}{15}*\frac{10}{15} = \frac{2}{5}

\frac{9}{15}*\frac{10}{15}=\frac{3}{5}*\frac{2}{3}=\frac{1}{5}*\frac{2}{1} =\frac{2}{5}

Rowan ate \frac{2}{5} of the pizza

Hope this helps!

3 0
2 years ago
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