Help I need this done

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Answer 1

Answer: The answer is 6 because I did the math

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Suppose that B1 and B2 are mutually exclusive and complementary events, such that P(B1 ) = .6 and P(B2) = .4. Consider another event A such that P(A | B1) = .2 and P(A | B2) = .5. Find P(A).

Determine the value of x

1)70
2)140
3)40
4)280

Answers

180-140= 40

Im not so sure of my answer so I might be wrong so enjoy!!

Help any tutor help

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the slope is 4, the equation is in y= mx + b format. the m, or in this case 4, is the slope.

A shipment of beach balls with a mean diameter of 28 cm and a standard deviation of 1.3 cm is normally distributed. By how many standard deviations does a beach ball with a diameter of 26.7 cm differ from the mean?a. 1

b. 1.3

c. 2

d. 3

Answers

Answer: a. 1

Step-by-step explanation:

Given : Population mean : $\mu=28\ cm$

Standard deviation : $\sigma=1.3\ cm$

Let n be the number of times a beach ball with a diameter of 26.7 cm differ from the mean.

Then, we have

$28-n(1.3)=26.7\n\n\Rightarrow\ 1.3n=28-26.7\n\n\Rightarrow\ 1.3 n=1.3\n\n\Rightarrow\ n=1$

Hence, a beach ball with a diameter of 26.7 cm is 1 standard deviation differ from the mean.

Every day, you take the elevator from the basement parking lot that is at level-3. The elevator takes twoseconds per level and you find that it takes 46 seconds to reach your floor.
Which floor do you live on?