A 3-card hand is dealt from a standard 52-card deck, and then one of the 3 cards is chosen at random. If only one of the cards
2 answers:
<u>Answer:</u>
P (chosen card is 3) =
<u>Step-by-step explanation:</u>
We are given that a 3-card hand is dealt from a standard 52-card deck, and then one of the 3 cards is chosen at random.
Given that only one of the cards is a 3, we are to find the probability that the chosen card is a 3.
Since only one card is a 3 and one card is chosen so:
P (chosen card is 3) = 1 / 3
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Answer:
The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
Sample of 421 new car buyers, 75 preferred foreign cars. So
85% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).
Answer:
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Step-by-step explanation:
Answer: The simplified form is
Step-by-step explanation:
Since we have given that
As we know the "Exponential law":
So, it becomes
Now, at last it becomes,
Hence, the simplified form is