What is the value of 3 in 136,422

Mathematics

2 answers:

enot [183]3 years ago

7 0

Answer:

30 thousand.

Step-by-step explanation:

Given : 136,422

To find : what is the value of 3 .

Solution : We have given 136,422.

We need to find the value of 3

We can write it in expanded form

100000+30000+6000+400+20+2.

3 is at ten thousand place in 136,422

So, value of 3 is 30 thousand.

Therefore, 30 thousand.

aliina [53]3 years ago

5 0

The three refers to 3 ten thousands. or 3 x 10,000.

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Komok [63]

Answer: Correct critical value = 2.2622

Step-by-step explanation:

Confidence interval for population mean when population standard deviation is unknown:

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}$ , where $\overline{x}$ = sample mean, n= sample size, s= sample standard deviation, $t_{\alpha/2}$ = two-tailed t value.

As per given: n= 10

degree of freedom : df = n-1=9

$\overline{x}=242.6\\\\s=73.33\\\\\alpha=5\%=0.05$

Critical t-value : $t_{\alpha/2,df}=t_{0.05/2,9}=t_{0.025,9}=2.2622$

So, the 95 percent confidence interval estimate for the mean :

$242.6\pm (2.2622)\dfrac{73.33}{\sqrt{10}}\\\\=242.6\pm (2.2622)(23.19)\\\\\approx242.6\pm52.46\\\\=(242.6-52.46,\ 242.6+52.46)\\\\=(190.14,\ 295.06)$