A coin is thrown 3 times. What is the probability that at least one head is thrown?.
2 answers:
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Answer:
The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%
Step-by-step explanation:
Confidence interval for the proportion of people who own a tablet:
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:
99% 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:
Percentage:
Multiply the proportion by 100.
0.7159*100 = 71.59%
0.8841*100 = 88.41%
The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%
Answer:
4^8
Step-by-step explanation:
If you are multiplying two bases that are the same with different exponents, the exponents get added and the base stays the same:
Therefore, 4^3 * 4^5 = 4^8
Therefore, find f(2) and g(2) first before subtracting.
Therefore,
Then find g(2)
Then put f(2) to subtract g(2)
Therefore, the answer is (f-g)(2) = -49.