Answer:
Step-by-step explanation:
Let X be the mean height of peak patrons,
Then X is normal with mean = 68 inches and std dev = 12 inches
Whenever x<54, they are not allowed to use the ride.
x=54 means z=
The z for 54" is
From std normal table we find that the area to the left of -1.17 is
0.3790
P(X>54) =1-0.3790
=0.6210=62.10%
P(54<x<68) = 0.5-0.3790 =0.121=12.1%
P(X>68) =0.5%=50%
A) The probability of picking a white tie 300 times =
B) The probability of picking a blue tie 300 times =
C) The probability of picking a red tie 300 times =
D) the probability of picking a black tie 300 times =
E ) the probability of picking a maroon tie 300 times =
F) the probability of NOT picking a white tie 300 times =
Step-by-step explanation:
Here, the total number of black neckties = 6
The total number of white neckties = 2
The total number of red neckties = 4
The total number of maroon neckties = 2
The total number of blue neckties = 2
The number of times the experiment is repeated = 300
A ) P(Picking a white tie) =
=
So, the probability of picking a white ONCE is 1/8.
Now, as the experiment is REPEATED 300 times with replacement.
So, the probability of picking a white tie 300 times =
B) P(Picking a BLUE tie) =
So, the probability of picking a blue ONCE is 1/8.
Hence, the probability of picking a blue tie 300 times =
C) P(Picking a Red tie) =
So, the probability of picking a red ONCE is 1/4.
Hence, the probability of picking a red tie 300 times =
D) P(Picking a Black tie) =
So, the probability of picking a red ONCE is 3/8.
Hence, the probability of picking a black tie 300 times =
E) P(Picking a maroon tie) =
So, the probability of picking a maroon ONCE is 1/8.
Hence, the probability of picking a maroon tie 300 times =
F) P(Picking a NOT whiten tie) = 1 - P( picking a white tie)
So, the probability of NOT picking a white ONCE is 7/8.
Hence, the probability of NOT picking a white tie 300 times =