Hi there! The answer is 25 %.
To find the percentage of discount we need to divide the discount by the price of the coat (and multiply by 100%).
(20 / 80) × 100 % = 25 %
Out of 90 reservation made, 77 diners are expected to show up. And the standard deviation of this binomial distribution is 3.39
We have been given that
Percentage of people who make reservation and didn’t show up = 15% = 0.15
Number of reservation made = 90
Now we have to calculate number of people expected to show up that is we have to calculate mean. As this a binomial distribution in which we have been given
n = 90 and q = 0.15
Thus, µ = np = 90*(1-0.15) = 90*0.85
µ = 76.5 ≈ 77
Thus it is expected to have 77 diners to show up.
Now standard deviation is given as:
σ = √npq
σ = √90*0.15*0.85
σ = 3.39
Hence the standard deviation is 3.39
Learn more about binomial distribution here : brainly.com/question/25992005
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Answer:
1.
336-6=330
330÷6=55
55 Students in each bus
2.
242-11=231
231÷7=33
Each book was 33 dollars
3.
5+30+100=135
The smallest number is 5
4.
18-3=15
15÷8=1.8
Each candy bar was 1.8 dollars
5.
14-9=5
Her allowance is 5 dollars
6.
4+20+60=84
The smallest number is 4
7.
12-7=5
5×2=10
She had 10 in the begining
Answer:
The coordinates of point D( 4,4)
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given points are E(10,4) and B(16,4)
'E' is the mid-point of segment BD
Let D(x₁, y₁) be a point
E = midpoint of segment BD
20 = x₁ + 16
20-16 = x₁
x₁ =4
<u><em>Step(ii):-</em></u>
4 + y₂ = 8
y₂ = 8-4 =4
The co-ordinates of point D( 4,4)