Answer:
P( x < 8) = 0.0344
Step-by-step explanation:
<u><em>Step(i)</em></u>:-
Given 'n' = 20 and 'p' = 0.60
Mean of the binomial distribution = n p
μ = n p = 20 × 0.60 = 12
<em>Mean 'μ' = 12</em>
Standard deviation of the binomial distribution = 
<em>Standard deviation σ = 2.19</em>
<u><em>Step(ii):</em></u><em>-</em>
Let 'X' be the random variable of normal distribution
Let 'x' = 8
P( x < 8) = P( Z< -1.82)
= 1- P( Z>1.82) (∵ A(-1.82) = A(1.82)
= 1 - (0.5 + A( 1.82))
= 0.5 - A (1.82)
= 0.5 - 0.4656
= 0.0344
<u>Conclusion</u>:-
<em>P( x < 8) = 0.0344</em>
About 25 percent of the data are greater than 20.(option a)
About 50 percent of the data are less than 15. (option b)
20 is wrongly interpreted as the median. 20 is the third quartile. The data between 11 and 20 is 50%.
<h3>How can a box-and-whisker plot be interpreted?</h3>
A box plot is used to study the distribution and level of a set of scores. The scores are distributed into 4 groups. Each group has a value of 25%
The box plot consists of two whiskers and a box. The first whisker represent the minimum value. The second whisker represents the maximum number.
On the box, the first line to the left represents the lower (first) quartile. 25% of the score represents the lower quartile. The next line on the box represents the median. 50% of the score represents the median. The third line on the box represents the upper (third) quartile. 75% of the scores represents the upper quartile.
20 is the third quartile. Score greater than 20 is 25% (100% - 75%)
15 is the median. Scores less than 15 is 50% (100 - 50%),
To learn more about box plots, please check: brainly.com/question/27215146
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I think the answer doesn't exist because your question is incomplete.
Answer:
Step-by-step explanation:
Given
per car
per car
Required
Determine the profit
Let the number of cars be n. So:
Express on n cars is: 260n
Charges on n cars is 450n
The profit (p) is then represented as:
