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Leona [35]
3 years ago
14

find the size of each sample needed to estimate the difference between the proportions of boys and girls under 10 years old who

are afraid of spiders. Assume that we want a 95% confidence level and that the error is smaller than 0.03.
Mathematics
1 answer:
Alex Ar [27]3 years ago
6 0

Answer:

sample

Step-by-step explanation:

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2/7 - 3/2 for anyone that doesant know that’s a fraction am struggling on
enyata [817]

Answer:

-17/14

Step-by-step explanation:

To subtract fractions, you must have a common denominator. If that is not given, you make it.

You do so buy finding the LCM of denominators:

LCM of 7 and 2 = 14

Now, here you have multiplied the denominators either by 7 or 2. You do the same for the respective numerators:

2x2/14 - 3x7/14 = 4/14 - 21/14.

Now that you have the same denominator, subtract the numerators:

4-21 = - 17

Put it back as a fraction : -17/14

hope this helps.

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3 years ago
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3 years ago
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kotykmax [81]

Answer:

c

Step-by-step explanation:

10 times 8 = 80

80 times 3 = 240

5 0
3 years ago
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Anyone tell me answer please
Delicious77 [7]

Answer:

10 apples ( for numero uno)

Step-by-step explanation:

There are 5 bags of 4 apples, so that means there are 20 apples total. They are shared equally between two children, so it means that it is divided by 2, which is 10. So each child gets 10 apples.

Hope it helped!

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In order to receive a B in Biology class, Michael must have an average score of at least 82 on 5 tests. So far, he has made 88,
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Answer:

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Step-by-step explanation:

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2 years ago
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