Mystatlab quiz
I have a quiz on Mystatlab that need somebody log in to my account and finish it.
i don’t have time to finished it. it only have one chance to submit.
the time limit is 90 min. i won’t request a refund if the grades is higher than 90.
example problem is like this:
A random sample of 111women showed that the mean number of children reported was
1.71with a standard deviation of 1.9(Interestingly, a sample of 111men showed a mean of 1.3 children.) Complete parts (a) through (c) below.
Click the icon to view the t-table.
a. Find a 95% confidence interval for the population mean number of children for women. Because the sample size is so large, you can use 1.96 for the critical value of t (which is the same as the critical value of z) if you do the calculations manually. Choose the correct answer below and, if necessary, fill in the answer boxes to complete your choice.
(Type integers or decimals rounded to the nearest hundredth as needed. Use ascending order.)
We are 95% confident that the sample mean number of children is between nothing
and
nothing.
There is a 95% chance that all numbers of children will be between nothing
and
nothing.
We are 95% confident that the population mean number of children is between nothing
and
nothing.
The requirements for constructing a confidence interval are not satisfied.
b. Find a 90% confidence interval. Use 1.645 for the critical value of t, which is the critical value of z. Choose the correct answer below and, if necessary, fill in the answer boxes to complete your choice.
(Type integers or decimals rounded to the nearest hundredth as needed. Use ascending order.)
We are 90% confident that the population mean number of children is between nothing
and
nothing.
There is a 90% chance that all numbers of children will be between nothing
and
nothing.
We are 90% confident that the sample mean number of children is between nothing
and
nothing.
The requirements for constructing a confidence interval are not satisfied
