Joy Wigens, who works at Putnam Investments, received a check for $2,670. She deposited 1/3 of the check in her Citibank account
1 answer:
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Answer:
The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.
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 4500 - 98.7 = 4401.3 gallons
The upper end of the interval is the sample mean added to M. So it is 4500 + 98.7 = 4598.7 gallons
The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.
Answer:
The salary after all the increment = $62899.0879
Step-by-step explanation:
It is given that starting annual salary = $55183
There is given that there are there are three time increment of 0.6 %
So salary after 0.6% increment of 3 times = = $56182.2656
After that there is other increment of 1.9 % that is 6 times
So salary after this increment =
So the salary after all the increment = $62899.0879
<u>Answer</u>:
13. || 14.
<u>explanation</u>:
13.
14.