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Andrej [43]
3 years ago
12

Daisy is remodeling her home. The rectangular floor in the living room is 18 feet long and 9

Mathematics
1 answer:
nydimaria [60]3 years ago
5 0

Answer:

$532 for both rooms.

208 for dining room. 324 for living room.

Step-by-step explanation:

Find out how much square foot is in both rooms by multiplying length and width. then multiply each rooms square foot .by 2. then add up the two.

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A manufacturer of nails claims that only 4% of its nails are defective. A random sample of 20 nails is selected, and it is found
irakobra [83]

Answer:

The p-value of the test is 0.0853 > 0.05, which means that there is not enough evidence to reject the manufacturer's claim based on this observation.

Step-by-step explanation:

A manufacturer of nails claims that only 4% of its nails are defective.

At the null hypothesis, we test if the proportion is of 4%, that is:

H_0: p = 0.04

At the alternative hypothesis, we test if the proportion is more than 4%, that is:

H_a: p > 0.04

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.

4% is tested at the null hypothesis

This means that \mu = 0.04, \sigma = \sqrt{0.04*0.96}

A random sample of 20 nails is selected, and it is found that two of them, 10%, are defective.

This means that n = 20, X = 0.1

Value of the test statistic:

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

z = \frac{0.1 - 0.04}{\frac{\sqrt{0.04*0.96}}{\sqrt{20}}}

z = 1.37

P-value of the test and decision:

Considering an standard significance level of 0.05.

The p-value of the test is the probability of finding a sample proportion above 0.1, which is 1 subtracted by the p-value of z = 1.37.

Looking at the z-table, z = 1.37 has a p-value of 0.9147

1 - 0.9147 = 0.0853

The p-value of the test is 0.0853 > 0.05, which means that there is not enough evidence to reject the manufacturer's claim based on this observation.

7 0
3 years ago
Read 2 more answers
Two times the sum of a number and 22 is atleast -28<br><br> please hurry
Marta_Voda [28]

Answer:

-6

Step-by-step explanation:

Mark me as brainliest

6 0
3 years ago
Complete the number sentence to make it true
Mila [183]
The answer is 54.609 is less than 54.69
3 0
2 years ago
Unlike fractions 5/6-1/2=
PolarNik [594]
The answer is one third or 1/3 multiply diagonal both ways and then multiply  denominators 
5 0
3 years ago
Please help me with this. Please!
jonny [76]

Answer:

214

Step-by-step explanation:

A circle is 360 degrees

Arc EF is 146 degrees

EF + EDF = full circle

146 + EDF = 360

Subtract 146 from each side

146-146 +EDF = 360-146

EDF =214

4 0
3 years ago
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