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3 years ago

4.1 is ten times as much as__ 9.2 is ten times as much as_

Mathematics

2 answers:

Setler79 [48]3 years ago

6 0

4.1 is ten times as much as 0.41

9.2 is ten times as much as 0.92

Arada [10]3 years ago

5 0

Answer:

4.1 is 10 x 0.41

9.2 is 10x .92

Can I have brainliest?

Step-by-step explanation:

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Assume the sample variances to be continuous measurements. Find the probability that a random sample of 25observations, from a n

konstantin123 [22]

Answer:

a) $P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502$

b) $P(13.848$ Step-by-step explanation:

Previous concepts

The Chi Square distribution is the distribution of the sum of squared standard normal deviates .

For this case we assume that the sample variance is given by $S^2$ and we select a random sample of size n from a normal population with a population variance $\sigma^2$ . And we define the following statistic:

$T = \frac{(n-1) S^2}{\sigma^2}$

And the distribution for this statistic is $T \sim \chi^2_{n-1}$

For this case we know that n =25 and $\sigma^2 = 6$ so then our statistic would be given by:

$\chi^2 = \frac{(n-1)S^2}{\sigma^2}=\frac{24 S^2}{6}= 4S^2$

With 25-1 =24 degrees of freedom.

Solution to the problem

Part a

For this case we want this probability:

$P(S^2 > 9.1)$

And we can multiply the inequality by 4 on both sides and we got:

$P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502$

And we can use the following excel code to find it: "=1-CHISQ.DIST(36.4,24,TRUE)"

Part b

For this case we want this probability:

$P(3.462 < S^2$

If we multiply the inequality by 4 on all the terms we got:

$P(3.462*4 < 4S^2 < 4*10.745)= P(13.848< \chi^2$ And we can find this probability like this: $P(13.848$ And we use the following code to find the answer in excel: "=CHISQ.DIST(42.98,24,TRUE)-CHISQ.DIST(13.848,24,TRUE)"

8 0

3 years ago

Define the term inflation

shtirl [24]

Answer:

the action of inflating something or the condition of being inflated.

a general increase in prices and fall in the purchasing value of money.

Hope this helps

Step-by-step explanation:

3 0

3 years ago

Need help figuring this out

alina1380 [7]

Answer:

think it is d

Step-by-step explanation:

5 0

3 years ago

I a bandana has 40 stripes and 60 stars how many patterns are there total

Aleks04 [339]

40+60 is 100 if that’s what you’re asking

3 0

3 years ago

On a certain function machine, an input of 3 has an output of -6. An input of -2 has an output of 4. An input of 0 has an output

horrorfan [7]

Input of 3.....output of -6.......(3 * -2 = -6)
input of -2....output of 4........(-2 * -2 = 4)
input of 0....output of 0.........(0 * -2 = 0)

function rule : multiply the input by -2

6 0

4 years ago

Read 2 more answers

4.1 is ten times as much as____ 9.2 is ten times as much as___

4.1 is ten times as much as__ 9.2 is ten times as much as_