Answer:
The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.
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.
In this quesstion:
So
The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.
Answer:
20 square yards
Step-by-step explanation:
5 times 6 equals to 30 square yards. Then divide this by 3 to get 10 and multiply by 2. Then you get an answer of 20 square yards
Answer: 792
Step-by-step explanation:
Given : Hugo and Viviana work in an office with ten other coworkers.
Out of these 12 workers, their boss needs to choose a group of five to work together on a project.
The combination of n thing taking m at a time is given by :-
Then, the number of different working groups of five the boss can choose :-
Hence, the number of different working groups of five the boss can choose = 792.
44% + 48% = 92%
48% go, 44% dont go...so thats 92% that either go or dont go....leaving u with 8% unsure
0.08(650) = 52 are not sure they will attend