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myrzilka [38]
3 years ago
9

Explain how counting number of girls in five children family can be treated as a binomial experiment. What assumptions are neces

sary?
Mathematics
1 answer:
Juliette [100K]3 years ago
8 0

This is a binomial experiment and you'll use the binomial probability distribution because:

  1. There are two choices for each birth. Either you get a girl or you get a boy. So there are two outcomes to each trial. This is where the "bi" comes from in "binomial" (bi means 2).
  2. Each birth is independent of any other birth. The probability of getting a girl is the same for each trial. In this case, the probability is p = 1/2 = 0.5 = 50%
  3. There are fixed number of trials. In this case, there are 5 births so n = 5 is the number of trials.

Since all of those conditions above are met, this means we have a binomial experiment.

Some textbooks may split up item #2 into two parts, but I chose to place them together since they are similar ideas.

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When multiplying numbers in scientific notation you blank the coefficients and substract the exponents?
34kurt
For the sake of example, let's multiply the two numbers 2.3 \times 10^5 and 3.5 \times 10^7 together. Altogether, we have:

2.3\times10^5\times3.5\times10^7

Rearranging the expression, we can group the exponents and coefficients together:

2.3\times3.5\times10^5\times10^7

Multiplying each out, we notice that since 10^5 and 10^7 have the same base (10), multiplying them has the effect of adding their exponents, which leaves us with:

2.3\times3.5\times10^{5+7}=8.05\times10^{12}

The takeaway here is that multiplying two numbers in scientific notation together has the effect of multiplying its coefficients and <em>adding</em> its exponents.
8 0
3 years ago
Sam wants to write an equation to represent a proportional relationship with a constant of proportionality of 6 he write y = 6 +
Olin [163]

Answer:

y = 6x

Step-by-step explanation:

The equation representing a proportional relationship is

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Here k = 6 , then

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7 0
3 years ago
Find the slope-intercept form of the
3241004551 [841]
Parallel lines have the same slope.
So I plug in the -5 and -4
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Answer:

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2 years ago
Julie pays for a meal at a restaurant with a $20 bill. Let c represent the cost of the food. The total cost includes a tip that
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3 years ago
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