Harriet and Harry Combs (both 37 years old) are married and both want to contribute to a Roth IRA. In 2019, their AGI before any
IRA contribution deductions is $50,000. Harriet earned $46,000 and Harry earned $4,000. (Leave no answer blank. Enter zero if applicable.) a. How much can Harriet contribute to her Roth IRA if they file a joint return?
Contribution Roth IRA ?
b. How much can Harriet contribute if she files a separate return?
Contribution Roth IRA ?
c. How much can Harry contribute to his Roth IRA if they file separately?
Contribution Roth IRA ?
Contribution Roth IRA ?
b. How much can Harriet contribute if she files a separate return?
Contribution Roth IRA ?
c. How much can Harry contribute to his Roth IRA if they file separately?
Contribution Roth IRA ?
1 answer:
You might be interested in
Answer:
Sample size is 16
Mean 4
Standard deviation of the sample is 0.3.
Explanation
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation
, a large sample size can be approximated to a normal distribution with mean
and standard deviation
.
In this problem, we have that:
The population has a mean of four hours, with a standard deviation of 1.2 hours. The sample is the 16 of the employees.
So
The sample size is 16, so
The mean of the sample is the same as the population mean, so .
The standard deviation of the sample is