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shtirl [24]
3 years ago
9

Find the margin of error for each sample. Then find an interval likely to contain the true population proportion.

Mathematics
1 answer:
adelina 88 [10]3 years ago
4 0
A.15% of 475 teacher is the answer
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Multiply and simplify: b3 • b • b4 • b2
Luden [163]
Are those supposed to be exponents? When multiplying exponents you add them together

b^3 * b^1 * b^4 * b^2  
3 + 1 + 4 + 2 = 10

Answer: b^10
5 0
3 years ago
Read 2 more answers
It took an hour to now a lawn using a mower with 14 inches blade. How long will it take using a mower with 12 inches wide
kozerog [31]

If the time taken by 14 inches wide is one hour then the blade of 12 inches wide will take 1 hour 17 minutes to mow a lawn.

What is width?

The width of something is the measurement of one side of a body. It is generally less than length of that body or shape.

How to calculate time?

We have been given time of 1 hour if blade is 14 inches wide and we have to calculate time taken by 12 inches wide blade:

It will be as 14/12* 1 hour

=14/12

=1.167

=1.17 hour

Hence the time taken by the blade of 12 inches wide will be 1 hour and 17 minutes.

7 0
2 years ago
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How are crabs and seashells different and how are they alike give more than one reason why give at least three examples!!!!!Plea
ipn [44]
Crabs are "alive" 
Seashells are just a "shell" as in the hard part of a crab is attached and part of the crab
You eat crabs but not seashells
8 0
3 years ago
Raul and Athena make bumper stickers. They know that their fixed costs are $145 and the cost of each bumper sticker is $2. Write
alexandr1967 [171]

Answer:

145 + 2c = X

Step-by-step explanation:

Fixed cost: 145

PLUS

2 dollars per bumper sticker (c)

After you write this out, you can put this as an actual equation.

8 0
2 years ago
From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?
Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

A delegation of 2 is selected.

Let X be the number of men selected. So, the possible values of X are 0,1,2.

P(X=0)=\dfrac{^3C_0\times ^4C_2}{^7C_2}=\dfrac{2}{7}

P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}

P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}

The expected number of men in the delegation is

E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)

E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}

E(x)=\dfrac{6}{7}

E(x)\approx 0.86

Therefore, the expected number of men in the delegation is 0.86.

4 0
3 years ago
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