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azamat
3 years ago
14

2log2 8 – 3 logs 25 + 2x = log 10,000 may you show the steps please

Mathematics
1 answer:
anzhelika [568]3 years ago
8 0

Answer: x=2 - 1/2 x ㏒(16/2953125)

Step-by-step explanation:

  • log (28^2) + log(525^-3) + 2x=log(10^4)
  • log(28^2 x 1/523^3) + 2x=4
  • log(28^2/525^3) + 2x=4
  • log (112/75 x 75 x 525) + 2x=4
  • log(16/2953125) + 2x=4
  • 2x=4-log(16/2953125)
  • <u><em>x=2-1/2 x log(16/2953125)</em></u>

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You conduct a simulation regarding which team spectators at a football game support. Your null hypothesis is that there are equa
Llana [10]

Answer:

As the <em>p</em>-value is too small the null hypothesis will be rejected concluding that there is a higher proportion of people supporting the home team.

Step-by-step explanation:

The hypothesis to determine which team spectators at a football game support is:

<em>H₀</em>: There are equal proportions of people supporting the home team and the visiting team, i.e. <em>p</em>₁ = <em>p</em>₂.

<em>Hₐ</em>: There is a higher proportion of people supporting the home team than the visiting team, i.e. <em>p</em>₁ > <em>p</em>₂.

A <em>z</em>-test for difference between proportions can be used to perform the test.

The test statistic is:

z=\frac{\hat p_{1}-\hat p_{2}}{\sqrt{P(1-P)\frac{1}{n_{1}}+\frac{1}{n_{2}}}}}

Th decision rule is:

If the <em>p</em>-value of the test is less than the significance level <em>α </em>then the null hypothesis will be rejected and vice-versa.

The commonly used significance levels are 0.01, 0.05 and 0.10.

The <em>p</em>-value of the test is computed as, <em>p</em> = 0.002.

The <em>p</em>-value of the test is less than all the significance level.

Thus, the null hypothesis will be rejected at any of the three significance level.

Conclusion:

As the <em>p</em>-value is too small the null hypothesis will be rejected concluding that there is a higher proportion of people supporting the home team.

7 0
4 years ago
What is the value of x?
Y_Kistochka [10]
I’m pretty sure the value is 80 because that’s a 90° angle. 90 minus that 10 leaves 80
6 0
3 years ago
A six-sided die is rolled 120 times. Fill in the expected frequency column. Then, conduct a hypothesis test at the 5% level to d
borishaifa [10]

Answer:

Die is not fair given that  Pvalue< 0.05, hence we reject Null hypothesis

a) H0: Die = fair

b) Ha : Die ≠ fair

c) df = 5

Step-by-step explanation:

The expected frequency of every face values = 20

a) state Null hypothesis

H0: Die = fair

b) Alternate Hypothesis

Ha : Die ≠ fair

c) degree of freedom

df = ( n - 1 )

   = ( 6 - 1 ) = 5

n = sample size ( number of faces a die has )

Note : After conducting hypothesis test

Pvalue ≈  0.0026

test statistic ≈ 18.30

Hence we can conclude that die is not fair given that  Pvalue < 0.05, hence we reject Null hypothesis

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B27%7D%20%5Ctimes%20%20%20%5Csqrt%5B3%5D%7B16%7D%20%20%3D%20%20%20%20" id="
gtnhenbr [62]
I hope it helps. ....................

7 0
3 years ago
The price of a computer is marked down from $550 to $484 for a sale. The
scZoUnD [109]

Answer:

A) $425.92

Step-by-step explanation:

The new price percentage with relation to the previous can be determined by dividing p = \frac{484}{550}. Once we calculate p, we can multiply it by 484, which is equivalent to applying the same discount, thus \frac{484}{550}484=425.92

8 0
2 years ago
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