1. x = 1/ ( 
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Someone help me.............asap
1 answer:
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Answer:
The 99% confidence interval would be given (11.448;14.152).
Step-by-step explanation:
1) Important concepts and notation
A confidence interval for a mean "gives us a range of plausible values for the population mean. If a confidence interval does not include a particular value, we can say that it is not likely that the particular value is the true population mean"
represent the sample deviation
represent the sample mean
n =1003 is the sample size selected
Confidence =99% or 0.99
represent the significance level.
2) Solution to the problem
The confidence interval for the mean would be given by this formula
We can use a z quantile instead of t since the sample size is large enough.
For the 99% confidence interval the value of and
, with that value we can find the quantile required for the interval in the normal standard distribution.
And replacing into the confidence interval formula we got:
And the 99% confidence interval would be given (11.448;14.152).
We are confident that about 11 to 14 are the number of books that the people had read on the last year on average, at 1% of significance.
So,
Since this is independent probability, the probability of the event above occurring is:
First, the probability of landing on heads.
Now, the probability of rolling an even number.
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Plug it into the equation.
The correct option is C.
Since this is independent probability, the probability of the event above occurring is:
First, the probability of landing on heads.
Now, the probability of rolling an even number.
<u />
Plug it into the equation.
The correct option is C.