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3 years ago

9

Carlos chooses 50 movies at random from a list of all his movies to determine the average runtime of the movies in his collectio

n
determine whether each sample is random or a biased sample. Explain.

1 answer:

sveticcg [70]3 years ago

7 0

Answer:

subtract the #

Step-by-step explanation:

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Heeeeeeeelp!!!!!!!!!!!

Natasha_Volkova [10]

A is the answer because if you calculate the answer correctly. that will be so.

8 0

3 years ago

Use the Venn diagram to calculate probabilities. Circles A and B overlap. Circle A contains 15, circle B contains 10, and the in

grin007 [14]

Answer:

$(B) P(B)=\dfrac{16}{31}$

Step-by-step explanation:

From the Venn diagram, n(AUB)=31

The given probabilities in the option are calculated below:

$P(A)=\dfrac{21}{31}\\\\P(B)=\dfrac{16}{31}\\\\P(A|B)=\dfrac{P(A\cap B)}{P(B)}= \dfrac{6/31}{16/31} =\dfrac{6}{16}=\dfrac{3}{8} \\\\P(B|A)=\dfrac{P(B\cap A)}{P(A)}= \dfrac{6/31}{21/31} =\dfrac{6}{21}=\dfrac{3}{7}$

The only correct option is the probability of B which is $\frac{16}{31}$

8 0

3 years ago

Estimate -9 1/6 + 2 1/3 + (-1 7/8) I have more questions so if you want more just simply ask.

BigorU [14]

-8.70833333333 about but you can round to the nearest tenth (-8.7) or nearest whole number (-9)

4 0

3 years ago

14 times the difference of 8 and w

Lunna [17]

14(8-W)=0
(14*8)-(14*W)=0
112-14W=0
-112 -112
------------------- The answer is 8
-14W= -112
-14W/(-14)= -112/(-14)
W=8

5 0

3 years ago

Which is the value of b in the equation (y^-9)^b=y^45. A)-405

zimovet [89]

Divide 45 and 9 it was give you -5

8 0

3 years ago