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Inga [223]
3 years ago
10

If we multiply every observation in a data set by 2, the mean will

Mathematics
1 answer:
Pie3 years ago
5 0
If the values increase then the mean will as well, but if only the observations increase, the mean will decrease.
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If p(a | b) = 0.4, p(b) = 0.8, and p(a) = 0.5, are the events a and b independent?
pashok25 [27]

The events A and B are not independent.

Given that,

                  P(A|B) = 0.4

                  P(A) = 0.5

                  P(B) = 0.8

Two events A and B are said to be independent, if P(A∩B) = P(A) P(B)

We have, P(A|B) = P(A∩B)/P(B)

Therefore, P(A∩B) = P(A|B) P(B) = 0.4 x 0.8 = 0.32

Now P(A) P(B) = 0.5 x 0.8 = 0.4

So P(A∩B) ≠ P(A)P(B)

Therefore, the events A and B are not independent.

Learn more about independent events at brainly.com/question/22881926

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7 0
1 year ago
A student writes an incorrect step while checking if the sum of the measures of the two remote interior angles of triangle ABC b
mihalych1998 [28]

Answer: The first option

Step-by-step explanation:

I'm smart

5 0
2 years ago
At a movie screening, there were 35 adults and 40 children. Using any ratio notation, write the ratio of adults to children.
xenn [34]

Answer:

35:40 ; 35 to 40 ; 35/40

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Round 1,289 to the nearest 100
anygoal [31]
1300
is the correct answer

8 0
3 years ago
Read 2 more answers
Sheila can pay her hotel bill in Euros (€) or Pounds (£).
algol [13]

Answer:

£365 is cheaper than  €425.

Step-by-step explanation:

We want to convert both prices to the same currency. It is easier to convert pounds to euros, as the exchange rate uses £1.

€425 or £365

£365 = €(365 * 1.14)

£365 = €416.10

€425 > €416.10

£365 is cheaper than  €425.

8 0
3 years ago
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