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Sergio [31]
2 years ago
15

In a certain small town there were 50 babies born in one year. Of these 50 babies, 30 were girls and 20 were boys. To investigat

e this data, a doctor ran a simulation on a computer where 50 coins were flipped 1000 times. The number of heads out of 50 flips was 30 or more 98 times. Do these results prove that girl babies are more likely than boy babies in that town?

Mathematics
1 answer:
mrs_skeptik [129]2 years ago
5 0
The answer is shown in the picture .

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Carl wants to find the product 30×56 . Which of the following best explains how he can find the product mentally?A.He knows that
saw5 [17]

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He knows that 30÷5 is 6. He then multiplies 6 by 6 to get 36

Step-by-step explanation:

A is option is the best approach for him to find the answer.

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Meghan says the difference between the least amount of time it takes a student to say the alphabet and the greatest amount of th
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67 eghan says the difference between the least amount of time it takes a student to say the alphabet and the greatest amount

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Erik drives 19.2 miles in 16 minutes.
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Bruh it clearly says 65 mph so that’s the answer
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2 years ago
Legalization of marijuana, Part I. The 2010 General Social Survey asked 1,578 US res- idents: \Do you think the use of marijuana
mixer [17]

Answer:

Step-by-step explanation:

a) Sample statistics are used to estimate population value. Since 48% is a sample proportion, therefore, it is a sample statistic.

b) For 95% confidence level, z* = 1.96.

\hat{p}\pm z^* \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}= 0.61\pm 0.61\sqrt{\frac{0.61(1-0.61)}{1578}}=0.61\pm 0.024 \ or (0.586, 0.634).

We are 95% confident that the true proportion of US residents who think marijuana should be made legal lies between 58.6% and 63.4%.

c)

\\np=1578(0.61)=962.58

\\n(1-p)=1578(1-0.61)=615.42

Since both np and n(1-p), are at least 10, the normal model is a good approximation for these data.

d) As the lower limit of confidence interval is less than 0.5, less than 50% population is also a plausible value of true proportion. This means the statement "Majority of Americans think marijuana should be legalized" is not justified.

4 0
2 years ago
Martin chose two of the cards below. When he found the quotient of the numbers, his answer was -16/9. Write the division problem
Sveta_85 [38]

Answer:

The required division problem he must solve is:

\frac{2}{3} \div \frac{-3}{8} =\frac{2}{3}\times\frac{-8}{3}=\frac{-16}{9}

Step-by-step explanation:

Consider the provided information.

Martin chose two of the cards below. When he found the quotient of the numbers, his answer was -16/9.

As we know that the quotient of the number is a negative number.

Therefore, the sign of both numbers must be different,

Thus we can concluded he must select \frac{2}{3} as one of the card, so that product is a negative number.

Let the selected card be x.

\frac{2}{3} \div x =\frac{-16}{9}\\\\x=\frac{2}{3}\div\frac{-16}{9}\\\\x=\frac{2}{3}\times\frac{-9}{16}\\\\x=\frac{-3}{8}

Hence, the two cards should be \frac{2}{3} and \frac{-3}{8}

The required division problem he must solve is:

\frac{2}{3} \div \frac{-3}{8} =\frac{2}{3}\times\frac{-8}{3}=\frac{-16}{9}

3 0
1 year ago
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