Let $X$ be the random variable denoting the number of girls that are born. Then $X$ has a binomial distribution on $n=125$ babies and probability of getting a girl $p=0.5$ . The probability we want is

$\mathbb P(X\ge60)=\displaystyle\sum_{x=60}^{125}\binom{125}x0.5^{125-x}0.5^x\approx0.704=70.4\%$

7 0

3 years ago

Read 2 more answers

PLZ SOMEONE HELP ME

Sphinxa [80]

Answer:

9 teaspoons of cocoa

Step-by-step explanation:

3*3=9

6 0

2 years ago

What do you know to be true about the values of p and q?

artcher [175]

Answer:

p = q

Step-by-step explanation:

Angles in a triangle add up to 180°

For the left triangle:

180 = p + 20 + 80

p = 80

For the right triangle:

180 = q + 45 + 55

q = 80

Therefore, p = q

3 0

3 years ago

Read 2 more answers