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Helga [31]
2 years ago
6

Solve plss -8r + 12 = 36

Mathematics
2 answers:
Leokris [45]2 years ago
5 0

Answer:

-3

Step-by-step explanation:

  1. subtract 12 from 36, equaling 24
  2. divide the -8 from the 24, equaling -3
liubo4ka [24]2 years ago
4 0
  • -8r + 12 = 36

  • - 8 r = 36 - 12

  • - 8r = 24

  • 8r = - 24

  • r = - 24 / 8

  • r = - 3
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Answer:

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The estimated standard error of the difference between means is computed using the formula:

s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{1916.29^2}{67}+\dfrac{2379.47^2}{33}}\\\\\\s_{M_d}=\sqrt{54808.468+171572.045}=\sqrt{226380.513}=475.795

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MOE=t\cdot s_M=1.96 \cdot 475.795=932.54

Then, the lower and upper bounds of the confidence interval are:

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The 95% confidence interval for the difference between means is (-2164.21, -299.13).

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