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3 years ago

N/2-2n/16=3/8 what is the value of n?

Mathematics

2 answers:

adoni [48]3 years ago

5 0

Please look at my picture for the process.

Yakvenalex [24]3 years ago

4 0

N/2 - 2n/ 16 = 3/8
(n x 8 / 2 x 8 ) - (2n / 16) = 6 / 16
8n / 16 - 2n / 16 = 6/ 1 6
8n - 2n = 6
6n = 6
n = 6 / 6 = 1
n = 1

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Find the sum of 5 smallest consecutive whole numbers. Not 15

gogolik [260]

Answer:

Step-by-step explanation:

0 is the first whole number

The 5 smallest consecutive whole numbers:

0 , 1 , 2 , 3, 4

Add

0 + 1 + 2 + 3 + 4

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AysviL [449]

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3 years ago

In a random sample of 600 cars making a right turn at a certain intersection, 157 pulled into the wrong lane. Test the hypothesi

nevsk [136]

Answer:

The statistic value |Z| = 2.053 > 1.96 at 0.05 Level of significance

Null hypothesis is rejected

Alternative hypothesis is Accepted

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b)

The test statistic value |Z| = 2.053 >2.576 at 0.01 Level of significance

Null hypothesis is Accepted

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Step-by-step explanation:

Step(i):-

Given Population proportion = 30% or 0.30

Given data In a random sample of 600 cars making a right turn at a certain intersection, 157 pulled into the wrong lane

sample proportion

$p^{-} = \frac{x}{n} = \frac{157}{600} = 0.2616$

Null hypothesis:- H₀: p = 0.30

Alternative hypothesis : H₁:p≠0.30

Step(ii):-

Test statistic

$Z = \frac{p^{-}-P }{\sqrt{\frac{p(1-p)}{n} } }$

$Z = \frac{0.2616-0.30 }{\sqrt{\frac{0.30(1-0.30)}{600} } }$

Z = -2.053

|Z| = |-2.053| = 2.053

Level of significance = 0.05

Z₀.₀₅ = 1.96

The calculated value |Z| = 2.053 > 1.96 at 0.05 Level of significance

Null hypothesis is rejected

Alternative hypothesis is Accepted

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Actually 30% of all drivers make not this mistake at the given intersection

b)

Given level of significance = 0.01

Z₀.₀₁ = 2.576

The calculated value |Z| = 2.053 >2.576 at 0.01 Level of significance

Null hypothesis is Accepted

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3 years ago

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Answer:

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astra-53 [7]

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