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snow_tiger [21]

3 years ago

9

Which statement about histograms is true?

2 answers:

Yuki888 [10]3 years ago

7 0

Answer:

The third one

Step-by-step explanation:

Histograms are types of bar graph that are used to display numerical data organised into equal intervals. The bars should touch the adjacent bars but not overlaps. These intervals show the frequency distribution of the data, or how many pieces of data are in each interval.

AlladinOne [14]3 years ago

3 0

Answer:

I think its D

Step-by-step explanation:

Hope this was correct, to ur knowledge

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3 years ago

Determine if the events A and B are independent. Show all steps.

zmey [24]

<u><em></em></u>

Answer:

$P(A U B ) = \frac{13}{25}$

Step-by-step explanation:

<u><em>STEP:-1</em></u>

Given that events A and B are independent then

P(A ∩B ) = P(A) P(B)

Given that P(A) = 2/5 and P(B) = 1/5

<u><em>STEP:- 2</em></u>

P(A ∩B ) = P(A) P(B)

$P(A U B) = P(A) +P(B) - P(A n B )$

$P(A U B ) = P(A) +P(B) - P(A) P(B)$

<u><em>Step(iii):-</em></u>

<u><em></em></u> $P(A U B ) = \frac{2}{5} +\frac{1}{5} - \frac{2}{5} X \frac{1}{5}$ <u><em></em></u>

<u><em></em></u> $P(A U B ) = \frac{3}{5} - \frac{2}{5} X \frac{1}{5}$ <u><em></em></u>

<u><em></em></u> $P(A U B ) = \frac{3}{5} - \frac{2}{25}$ <u><em></em></u>

<u><em></em></u> $P(A U B ) = \frac{15-2}{25} = \frac{13}{25}$ <u><em></em></u>

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