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Bumek [7]
2 years ago
10

Write 3 numbers that round to 647,400 when rounded to the nearest hundred

Mathematics
1 answer:
vampirchik [111]2 years ago
4 0
1. 647,399 rounds to 647,400

2. 647,398 rounds to 647,400

3. 647,397 rounds to 647,400
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Rename 4/5 and 5/7 using the least common denominator
svlad2 [7]

Answer:

wh

Step-by-step explanation:

7 0
3 years ago
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Cual es la sustitución de x/2+3=7
Maslowich

Answer:

conio

Step-by-step explanation:

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2 years ago
Find the area and the circumference of a circle with radius 7 cm.
aniked [119]

Answer:

C=14pi cm

A=49pi cm^2

Step-by-step explanation:

1) Circumference of a circle is 2piR and R=7cm

C=2pi(7)

C=14pi cm

2) Area of a circle is piR^2 and R=7cm

A=pi (7)^2

A=49pi cm^2

3 0
2 years ago
A market research team thinks that their new ad campaign is better than their old one. They used to be able to sell to 50% of th
andreev551 [17]

Answer:

a. The test statistic is 2 and we conclude that the new ad campaign is not signficantly better.

Step-by-step explanation:

They used to be able to sell to 50% of those who saw their ads. Test if the new campaign is better.

At the null hypothesis, we test is it is the same, that is, the proportion is the same.

H_0: p = 0.5

At the alternate hypothesis, we test if it is significantly better, that is, the proportion is above 50%.

H_1: p > 0.5

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.5 is tested at the null hypothesis:

This means that \mu = 0.5, \sigma = \sqrt{0.5*0.5} = 0.5

They take a random sample of 100 potential buyers and find that they convinced 60 of these people to buy their product.

This means that n = 100, X = \frac{60}{100} = 0.6

Test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.6 - 0.5}{\frac{0.5}{\sqrt{100}}}

z = 2

The test statistic is 2.

P-value of the test and decision:

The p-value of the test is the probability of finding a sample proportion above 0.6, which is 1 subtracted the by p-value of z = 2.

Looking at the z-table, z = 2 has a p-value of 0.9772.

1 - 0.9772 = 0.0228.

The p-value of the test is 0.0228 > 0.01, which means that we cannot conclude that the new ad campaign is signficantly better, so the correct answer is given by option A.

5 0
3 years ago
You are canning pickles with cucumbers from your garden. You can fit approximately 12 cucumbers in each quart jar. If you have 2
Sveta_85 [38]

Answer:

300

Step-by-step explanation:

Since it says first rounding both numbers to the tenth place you will round 12 and 27

12 = 10

27 = 30

10 times 30 = 300

Hope this helps dude

5 0
3 years ago
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