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Answer:
Probability is 0.97725
Step-by-step explanation:
Given: Mean volume =12.1 ounces ,standard deviation=0.05
and 10 volumes are selected i.e no of observation or samples.
To find : calculate probability for fluid less than the 12 ounces.i.e P(X<12) with normal distribution probability .
Solution:
Given that data is independent normal random variables , which depends upon mean ,variance and the Standard Z-score .
Hence we have ,
Mean=12.1
Variance =square of (standard deviation).
Normal distribution is given by ,
N(mean,variance)
As there are 10 cans with mean 12.1 and variance=(0.05)^2=0.025.
Normal distribution probability is given by sum of independent normal random variables.
Using the notation as P(X-Y>0)
I.e. P(X>Y)
finding the probability of X greater than Y i.e.(12.1>12) ounces .
with same standard deviation we get,
X-Y ⇒N(12.1-12,0.0025)⇒N(0.1,0.0025).
=P(X-Y)
=P(X-Y>0)
=P(Z>)
=P(Z>-2)
=P(Z<2).
=0.97725.
Using the Z- table refer the normal probability Z-table.
Answer: The required expected value is $3.46.
Step-by-step explanation:
Since we have given that
Number of value of 4 or less are
2,3,4
So, there are 12 in numbers.
So, probability would be
Since Aces are considered as the highest card in the deck.
So, remaining probability would be
Amount paid or value of 4 or less = $165
Amount not paid for other case = $45
So, the expected value would be
Hence, the required expected value is $3.46.