PLEASE HELP ASAP!!!!
2 answers:
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Answer:
24.6 < μ < 27.2
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 25.9 - 1.3 = 24.6 pounds.
The upper end of the interval is the sample mean added to M. So it is 25.9 + 1.3 = 27.2 pounds.
So the correct answer is:
24.6 < μ < 27.2
You can get a 5 by rolling :
1 and 4
2 and 3
3 and 2
4 and 1
You can get a 9 by rolling :
3 and 6
4 and 5
5 and 4
6 and 3
There are 36 possible outcomes, hence your probability is
1 and 4
2 and 3
3 and 2
4 and 1
You can get a 9 by rolling :
3 and 6
4 and 5
5 and 4
6 and 3
There are 36 possible outcomes, hence your probability is