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kkurt [141]
3 years ago
13

Big babies: The Center for Disease Control and Prevention reports that 25% of baby boys 6-8 months old in the United States weig

h more than 20 pounds. A sample of 16 babies is studied.
D- Would it be unusual if more than 8 of them weigh more than 20 pounds
Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0

Answer:

Yes, it is unusual if more than 8 of 16 baby boys weigh more than 20 pounds

Step-by-step explanation:

Given:  25% of baby boys 6-8 months old in the United States weigh more than 20 pounds. A sample of 16 babies is studied.

To find: whether it is unusual that more than 8 baby boys weigh more than 20 pounds

Solution:

Number of babies in a sample = 16

According to report of the Center for Disease Control and Prevention, 25% of baby boys 6-8 months old in the United States weigh more than 20 pounds.

So, \frac{25}{100}(16)=4 baby boys weigh more than 20 pounds.

But in the question, it's given that more than 8 baby boys weigh more than 20 pounds.

So, yes, it is unusual.

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Which equation represents the formula for the general term, gn, of the geometric sequence 3, 1, 1/3, 1/9, . . .?
dedylja [7]

Answer:

Explicit form: g_n=3(\frac{1}{3})^{n-1}

Recursive form: g_n=\frac{1}{3}g_{n-1} with g_1=3.

Step-by-step explanation:

The first term is 3 and we are dividing by 3 each time.

Another way to say we are dividing by 3 each time is to say we are multiplying by factors of 1/3.

If the first term is a and r is the common ratio then the geometric sequence in explicit form is:

a_n=a(r)^{n-1}

g_n=3(\frac{1}{3})^{n-1}

The recursive form for a geometric sequence is a_n=ra_{n-1} with a_1=a where r is the common ratio and a is the first term.

So the recursive form for our sequence is g_n=\frac{1}{3}g_{n-1} with g_1=3.

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2 years ago
What is the equation of the line that is perpendicular to the line x=-2 and passes through the point (-5, 4)?
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because the original is a vertical, you need a horizontal line and the point it goes through is (-5,4)  so it has to be y = 4

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Buzz is buying 143 sodas for his pool party.They sold in packs of 12 and 35. pack of 35 is $12.58 and pack of 12 is $7.19.How ma
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Answer:

#1

Step-by-step explanation:


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C is the correct answer right?
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C is the correct answer :)
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