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lana [24]
3 years ago
11

Please answer I need an answer!!!

Mathematics
2 answers:
Sever21 [200]3 years ago
8 0

Answer:

g=7.5

n=2.6

unless you want it in simplified fraction form

rewona [7]3 years ago
8 0

Answer:

Step-by-step explanation:

3) \frac{2}{5}=\frac{3}{g}

Cross multiply

2 * g = 3*5

   2g = 15

     g = 15/2

      g = 7.5

4) \frac{n}{26}=\frac{5}{50}

cross multiply,

n * 50 = 5 *26

       n = \frac{5*26}{50}=\frac{1*26}{10}

      n = 2.6

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The average age at which adolescent girls reach their adult height is 16 years. Suppose you have a sample of 27 adolescent girls
abruzzese [7]

Answer:

a) t-statistic  t = 0.9532

b) The standard error  S.E = 1.2

c) The new  t-statistic = 1.95

d)  The new estimated standard error =0.666

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 16

The sample size n=27

The mean of the sample = 17.1

Given that the variance of the sample (S²) = 36.0

The standard deviation of the sample (S) = √36 = 6

Test statistic

  t = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

 t = \frac{17.1 -16}{\frac{6}{\sqrt{27} } }

t = 0.9532

b)

   The standard error is defined by

  S.E = \frac{S.D}{\sqrt{n} } = \frac{6}{\sqrt{27} } =1.154

<u><em>Step(ii):-  </em></u>

c) given that the sample size n = 81

Test statistic

 t = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

 t = \frac{17.1 -16}{\frac{6}{\sqrt{81} } }

t = 1.65

d)

The new standard error is defined by

  S.E = \frac{S.D}{\sqrt{n} } = \frac{6}{\sqrt{81} } = 0.66

3 0
2 years ago
4
Bogdan [553]

Answer:

j = 1.5??

Step-by-step explanation:

Not sure if this is a troll or not... but

42=28j

1.5 = j

3 0
2 years ago
Profit 75% retail $350. what is cost at wholesale
skelet666 [1.2K]

Answer:

Step-by-step explanation:

350-75%=87.5\\so 350-87.5\\=262.5\\$262.5 dolla profit\\

4 0
2 years ago
Shanice wanted to make note cards by
Leni [432]

Answer:

8 pieces of paper

Step-by-step explanation:

Since the paper was cut into two, divide the half-pieces by 2 go get the amount of full-sized paper. And since Shanie got 2 more pieces of paper before she started, you subtract 2 from 10, which leaves you with 8 pieces of full-sized paper.

3 0
3 years ago
What is the formula to find the interest
Andre45 [30]

i = prt

Hope this helps

3 0
3 years ago
Read 2 more answers
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