3 years ago

10 x 3 thousands in standard form

Mathematics

2 answers:

Serjik [45]3 years ago

8 0

Answer:

30,000

Step-by-step explanation:

valina [46]3 years ago

7 0

The answer is 30,000

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The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The sample standard

luda_lava [24]

Answer: $0.3849$

Step-by-step explanation:

Given : sample size : n= 51

sample standard deviation : s= 0.46

Significance level : $\alpha=1-0.95=0.05$

Using chi-square distribution, the critical values will be :

$\chi^2_{\alpha/2, n-1}=\chi_{0.025,\ 50}=71.4202$

$\chi^2_{1-\alpha/2, n-1}=\chi_{0.975,\ 50}=32.3574$

Confidence interval for population standard deviation ( $\sigma$ ) :

$\sqrt{\dfrac{s^2(n-1)}{\chi^2_{\alpha/2}}}$

Substitute all the values , we get

$\sqrt{\dfrac{(0.46)^2(50)}{71.4202}}$

Hence, the 95% two-sided confidence interval for σ : $0.3849$

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3 years ago

I need help with this pls I out 30 points<br>

KonstantinChe [14]

Answer:

Step-by-step explanation:

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50-54 2

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3 years ago

1.4=h/5 plz help me I’ll give brainliest

serious [3.7K]

1.4=h/5
multiply both sides by 5
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