3 years ago

Whats 21 17/12 reduced

Mathematics

1 answer:

liraira [26]3 years ago

3 0

17/12 = 1 5/12
21 17/12 = 22 5/12

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A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec

Alex_Xolod [135]

Answer:

95% confidence interval for the population mean is 20.255 and 17.945

Step-by-step explanation:

given data

mean = 19.1

standard deviation = 1.5

n = 9

to find out

95% confidence interval for the population mean

solution

we know 95% confidence interval formula i.e.

mean +/- t * standard deviation/ $\sqrt{n}$ .............1

here t for 9 students 2.31 ( from t table)

so put all value n t standard deviation and mean in equation 1

= mean +/- t * standard deviation/ $\sqrt{n}$

= 19.1 +/- 2.31 * 1.5/ $\sqrt{9}$

= 20.255 and 17.945

95% confidence interval for the population mean is 20.255 and 17.945

7 0

3 years ago

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Kipish [7]

Slope = 3/4
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4 0

3 years ago

How do i solve this problem 1/15+1/6

Semenov [28]

Answer:

7/30

Step-by-step explanation:

1/6 = 1x5/6x5

= 5/30

1/15= = 1x2/1x15

=2/30

2/30 + 5/30 = 7/30

5 0

3 years ago

When making a snack bowl, Drew mixes 76 cereal pieces with 19 marshmallows. How many cereal pieces are in Drew's snack mix for e

STatiana [176]

Answer:4

Step-by-step explanation:

76/19=4

5 0

3 years ago

N is inversely proportional to t and when t is 36 ,N is176 .

sergeinik [125]

Answer:

The answer is below

Step-by-step explanation:

N is inversely proportional to t, therefore:

N ∝ 1/t

Let k be the constant of proportionality, hence we can replace the relationship by:

N = k/t

Given that when t is 36, N is 176. Therefore we can find the value of k:

176 = k / 36

k = 176 * 36 = 6336

N = 6336/t

Also let us find N when t = 6. This is done by substituting t = 6 into the equation and simplifying:

N = 6336/6

N = 1056

8 0

3 years ago

Whats 21 17/12 reduced​

Whats 21 17/12 reduced