The probability that exactly 128 flights are on time is 88.27% and the probability that atleast 1 flight is on time is 0.022.
Given that the chances of reaching the flight on time be 88%.
We are required to find the probability that exactly 128 flights are on time, atlleast 1 flight on time.
Probability is basically the calculation of likeliness of happening an event among all the events possible. It lies between 0 and 1.
Probability=Number of items/Total items.
It cannot be negative.
Probability that the flight will be on time if one flight is selected=0.88
Probability that exactly 128 flights are on time=
128=1145*P/100
P=12800/145
P=88.27%
b) Atleast 1 flight is on time
=(
+
)/128
=(0.12+128*0.88*0.245)/128
=(0.12+2.575)/128
=0.022
Hence the probability that exactly 128 flights are on time is 88.27% and the probability that atleast 1 flight is on time is 0.022.
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Other options are incomplete and not found anywhere else.
Answer:
$82.16
Step-by-step explanation:
78.25 * .20 = 15.65 as a tip,
78.25 *.15 = 11.74 as the discount, subtract from initial value:
78.25 - 11.74 = 66.51
then add the tip: 15.65 + 66.51 = $82.16
Answer:
Step-by-step explanation:
leading coefficient of 1 ==> a=1
sum of roots= 7+(-5)=2 ==> b= - 2
Product of roots=-35 ==> c=-35
Formula is<u> y=x²-2x-35</u>=(x-7)(x+5)
1 cup = 128 grams
X cups = 96 grams
Cross multiply
128X = 1*96
X=96/128 cups = 6/8 = 3/4 cups.
If she has already added 1/2 cups, then she needs to add (3/4-1/2)=1/4 cup more sugar.
Also please remind her to do the calculations before adding ingredients to avoid ruining a recipe.