Answer:
Option (2).
Step-by-step explanation:
In the figure attached,
A, C and B are the points lying on a straight line.
2 lines EC and DC have been drawn by extending the lines from C to E and D respectively.
Ray CE is the angle bisector of ∠ACD.
That means CE divides ∠ACD in two equal parts.
m∠ACE = m∠DCE
Since m∠ACD = m∠ACE + m∠DCE
= 2(m∠ACE)
m∠ACE =
Therefore, option (2) will be the answer.
Answer:
a) P=0.998
b) P=0.879
c) P=0.268
Step-by-step explanation:
The mean charges per passenger are:
The standard deviation is known to be σ=$25.
If the sample size is 60, we have to calculate:
a) the probability the sample mean will be within $10 of the population mean cost per flight.
This can be calculated from the z-value for a margin or error of 10 from the mean:
b) the probability the sample mean will be within $5 of the population mean cost per flight.
This can be calculated from the z-value for a margin or error of 5 from the mean:
c) the probability the sample mean will exceed $100
Again we will calculate the z-score for X=100.