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KengaRu [80]
3 years ago
13

Jamal used 1/3 yard of ribbon to tie a package and 1/6 yard of ribbon to tie a bow how many yards of ribbon did Jamal use?

Mathematics
1 answer:
DaniilM [7]3 years ago
6 0

Answer:

1/2 yard

Step-by-step explanation:

1/3 yard x 6/6 = 6/18 yard

1/6 yard x 3/3 = 3/18 yard

6/18 + 3/18 = 9/18 = 1/2 yard

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g A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam. We ar
BaLLatris [955]

Answer:

The test statistic is z = 1.25

Step-by-step explanation:

We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%.

At the null hypothesis, we test if the proportion is 80%, that is:

H_0: p = 0.8

At the alternate hypothesis, we test if the proportion is more than 80%, that is:

H_a: p > 0.8

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.

80% is tested at the null hypothesis:

This means that \mu = 0.8, \sigma = \sqrt{0.2*0.8} = 0.4

A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam.

This means that n = 100, X = \frac{85}{100} = 0.85

The test statistic is

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

z = \frac{0.85 - 0.8}{\frac{0.4}{\sqrt{10}}}

z = 1.25

The test statistic is z = 1.25

4 0
3 years ago
Write an equation and solve<br><br> Nine less than five times a number equals 71. Find the number
goldfiish [28.3K]
The answer is 16 because 16•5=80 and then 80-9=71 yk?
3 0
3 years ago
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Find the factors of<br>y2 + 2y - 35​
baherus [9]

Answer:

(y-5)(y+7)

Step-by-step explanation:

3 0
3 years ago
What is an equation of the line that passes through the points (6, -1) and (1, 4)?
Nataly [62]
Here you go! Hope this helps!

3 0
1 year ago
HELP ME PLZ I don't get math
Finger [1]

Answer:

9/10 would be $1.80

2 would be $2.90

3 and 1/10 would be $4

10 would be $10.90

Step-by-step explanation:

Youre welcome bud im not sure how to explain tho

7 0
2 years ago
Read 2 more answers
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