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Rainbow [258]
3 years ago
8

URGENT!! MUST ANSWER QUICKLY!!! WILL GIVE BRAINLIEST IF CORRECT!!

Mathematics
2 answers:
V125BC [204]3 years ago
8 0

Answer:3/32

Step-by-step explanation:

what you do is keep change flip

keep 1/4

change division to mutiplacation

flip 8/3 to 3/8

so 1/4*3/8=3/32

Gre4nikov [31]3 years ago
3 0

Answer: The correct answer is 3/32.

Hope this helps!  :)

Step-by-step explanation:

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The Wall Street Journal reports that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deduction
Len [333]

Answer:

(a) <em>                             </em><em>n</em> :      20           50          100         500

P (-200 < <em>X</em> - <em>μ </em>< 200) : 0.2886    0.4444    0.5954    0.9376

(b) The correct option is (b).

Step-by-step explanation:

Let the random variable <em>X</em> represent the amount of deductions for taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return.

The mean amount of deductions is, <em>μ</em> = $16,642 and standard deviation is, <em>σ</em> = $2,400.

Assuming that the random variable <em>X </em>follows a normal distribution.

(a)

Compute the probability that a sample of taxpayers from this income group who have itemized deductions will show a sample mean within $200 of the population mean as follows:

  • For a sample size of <em>n</em> = 20

P(\mu-200

                                           =P(-0.37

  • For a sample size of <em>n</em> = 50

P(\mu-200

                                           =P(-0.59

  • For a sample size of <em>n</em> = 100

P(\mu-200

                                           =P(-0.83

  • For a sample size of <em>n</em> = 500

P(\mu-200

                                           =P(-1.86

<em>                                  n</em> :      20           50          100         500

P (-200 < <em>X</em> - <em>μ </em>< 200) : 0.2886    0.4444    0.5954    0.9376

(b)

The law of large numbers, in probability concept, states that as we increase the sample size, the mean of the sample (\bar x) approaches the whole population mean (\mu_{x}).

Consider the probabilities computed in part (a).

As the sample size increases from 20 to 500 the probability that the sample mean is within $200 of the population mean gets closer to 1.

So, a larger sample increases the probability that the sample mean will be within a specified distance of the population mean.

Thus, the correct option is (b).

8 0
3 years ago
X is a normally distributed random variable with mean 46 and standard deviation 22.
stiv31 [10]

Step-by-step explanation:

85 is the answer you are looking for

4 0
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The post office will accept packages whose combined length and girth is at most 42 inches. (the girth is the perimeter/distance
Vilka [71]
If x represents the length of the box, then 42-x will be the girth. Since the largest area for a given girth is that of a square, the side length of the square cross section is (42 -x)/4.

The volume as a function of package length is then
.. v(x) = x((42-x)/4)^2
This has a maximum at x=14. The corresponding volume is 686 in^3.

8 0
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These box plots show daily low temperatures for a sample of days in two
lara [203]

Answer:

d

Step-by-step explanation:

7 0
2 years ago
PLEASE HELPPP!!!<br><br><br> THIS SHOULD BE EASY!
cupoosta [38]

Answer:

yes she can

Step-by-step explanation:

6 0
2 years ago
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