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Levart [38]
3 years ago
14

​78% of U.S. adults think that political correctness is a problem in America today. You randomly select six U.S. adults and ask

them whether they think that political correctness is a problem in America today. The random variable represents the number of U.S. adults who think that political correctness is a problem in America today. Answer the questions below.
Find the mean of the binomial distribution ​(Round to the nearest tenth as​ needed.)Find the variance of the binomial distribution. (Round to the nearest tenth as​ needed.)
Mathematics
2 answers:
uysha [10]3 years ago
7 0

Answer:

mean = 4.9

variance = 1.0

Step-by-step explanation:

An American thinks that political correctness is a problem or does not think that it is a problem therefore the distribution of the random variable is binomial and for this case the parameters of it would be

n = 6 \\p = 0.78\\

Then the formula for the mean is

\text{mean} = n*p, which is 6*0.78 =  4.9,

The formula for variance is

\text{variance} = np(1-p) = 6*0.78(1-0.78) = 1.0

nikdorinn [45]3 years ago
5 0

Answer:

mean= 4.68

variance= 1.0296

Step-by-step explanation:

mean= n×p

n=6

p=0.78

mean= 6×(0.78)

           = 4.68

variance= n×p×(1-p)

             = 6 × 0.78×(1-0.78)

              = 1.0296

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Sloan [31]

Answer:

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Step-by-step explanation:

7 0
2 years ago
PLS HELP BRAINLIEST FOR CORRECT ANSWER+20 POINTS
svetoff [14.1K]

Answer:

120 blocks total

Step-by-step explanation:

All of the little cubes have side length 2"  Thus, the 11" height of the box cannot be used entirely:  we waste the top 1" because the five layers of little cubes reach only to 10" from the bottom.

Start at the bottom of the box.  The dimensions of the bottom are 12" by 8".  Along the longer side we can lay 6 blocks (which add up to 12" and are 2" wide.  We can add 3 more such rows to fill the available 8" width of the box bottom.  That's 6*4, or 24 blocks.

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7 0
2 years ago
You have $28, and you want to get half-dollar coins from the bank to give to children who come into your store. What is the most
g100num [7]

Answer:

28

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
3m-2x for m = 5 and x = 4
kipiarov [429]
M = 5 and x = 4

3(5) - 2(4)
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I hope this helps!
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3 years ago
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tia_tia [17]

Answer:

1 and 7/20 or in a decimal 1.35

Step-by-step explanation:

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