Answer:
Step-by-step explanation:
Hello!
The study variable is:
X: number of passengers that rest or sleep during a flight.
The sample taken is n=9 passengers and the probability of success, that is finding a passenger that either rested or sept during the flight, is p=0.80.
I'll use the binomial tables to calculate each probability, these tables give the values of accumulated probability: P(X≤x)
a. P(6)= P(X=6)
To reach the value of selecting exactly 6 passengers you have to look for the probability accumulated until 6 and subtract the probability accumulated until the previous integer:
P(X=6)= P(X≤6)-P(X≤5)= 0.2618-0.0856= 0.1762
b. P(9)= P(X=9)
To know the probability of selecting exactly 9 passengers that either rested or slept you have to do the following:
P(X≤9) - P(X≤8)= 1 - 0.8657= 0.1343
c. P(X≥6)
To know what percentage of the probability distribution is above six, you have to subtract from the total probability -1- the cumulated probability until 6 but without including it:
P(X≥6)= 1 - P(X<6)= 1 - P(X≤5)= 1 - 0.0856= 0.9144
I hope it helps!
Answer:
I assume that the question is 
6 * 6 = 36 35*6 = 216
in other words 6*6*6 = 216
Step-by-step explanation:
Answer:
The sales price is $19,976
Step-by-step explanation:
12 percent of 20000 is 24. 20000-24=19976
It cannot be be Integers because Integers include negative numbers (which are not counting numbers)
It cannot be real numbers because like integers, it includes negative numbers but also includes decimals which are not counting numbers
It cannot be absolute values because absolute values is the range of how far away a number is from 0 which obviously isn't counting
That leaves natural numbers which are counted in sequence which fits the definition needed
Answer: D. Natural Numbers
