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3 years ago

(4.5 x 104) = (300) = 0

Mathematics

1 answer:

Alex777 [14]3 years ago

6 0

Answer:

the equality is false the correct solution is

$4.5 \times 104 \\ (4 + 0.5) \times 104 \\ 4 \times 104 + 0.5 \times 104 \\ 416 + 52 \\ = 468$

hope it helps

please give me brainliest.

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Construct a 99% confidence interval for the population mean, mu. Assume the population has a normal distribution. A group of 1

Zarrin [17]

Answer:

99% confidence interval for the population mean is [19.891 , 24.909].

Step-by-step explanation:

We are given that a group of 19 randomly selected students has a mean age of 22.4 years with a standard deviation of 3.8 years.

Assuming the population has a normal distribution.

Firstly, the pivotal quantity for 99% confidence interval for the population mean is given by;

P.Q. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean age of selected students = 22.4 years

s = sample standard deviation = 3.8 years

n = sample of students = 19

$\mu$ = population mean

<em>Here for constructing 99% confidence interval we have used t statistics because we don't know about population standard deviation.</em>

So, 99% confidence interval for the population mean, $\mu$ is ;

P(-2.878 < $t_1_8$ < 2.878) = 0.99 {As the critical value of t at 18 degree of

freedom are -2.878 & 2.878 with P = 0.5%}

P(-2.878 < $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ < 2.878) = 0.99

P( $-2.878 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X - \mu}$ < $2.878 \times {\frac{s}{\sqrt{n} } }$ ) = 0.99

P( $\bar X -2.878 \times {\frac{s}{\sqrt{n} }$ < $\mu$ < $\bar X +2.878 \times {\frac{s}{\sqrt{n} }$ ) = 0.99

<u>99% confidence interval for</u> $\mu$ = [ $\bar X -2.878 \times {\frac{s}{\sqrt{n} }$ , $\bar X +2.878 \times {\frac{s}{\sqrt{n} }$ ]

= [ $22.4 -2.878 \times {\frac{3.8}{\sqrt{19} }$ , $22.4 +2.878 \times {\frac{3.8}{\sqrt{19} }$ ]

= [19.891 , 24.909]

Therefore, 99% confidence interval for the population mean is [19.891 , 24.909].

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4 years ago

Me pueden ayudar con esta página por favor la necesito para antes de las 12:00pm

Greeley [361]

Answer:

3.72 x 10^6

5.68 x 10^5

1 x 10^6

4.3 x 10^4

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8.6 x 10^-3

2.7 x 10^-4

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right side of page

520 000 000

8 000 000

49 000

0.000000248

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Step-by-step explanation:

its just moving the point.

3.72 x 10^6 you moved the point 6 times to the left so its positive.

5 x 10^-11 moved it 11 times to the right so its negative

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2 years ago

Greatest to least for 6, 3, -1/4, 0, -2/3, -3/5

Gnesinka [82]

6, 3, 0, -1/4, -2/3, -3/5

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A man needed to sell a car. He priced it at $3,500 the first day. The second day he reduced the price by 15%. What was the price

pashok25 [27]

Answer:

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Step-by-step explanation:

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