A sample was taken from a large population. Here are the gat…
A sample was taken from a large population. Here are the gathered statistics: . A.) If you were to find a 90% confidence interval for the population mean based on the above information, would you use a z-value (Z) or a t-value (T)? [a] B.) What should that value be? [b] Retype your answer. [c] C.) Find the 90% confidence interval. Note: Show your work as: point estimate margin of error, then type the final answer as an interval. (Be sure your answers have 3 decimal places, if needed.) [d] [e] or ([f], [g])
Read DetailsA population has 1100 members and its standard deviation is…
A population has 1100 members and its standard deviation is . Determine the size of the standard error if your sample is formed from 100 members of this population. (Use 3 decimal places in your answer.) [a] Retype your answer. [b]
Read DetailsUsing the same situation in Question 2, if it is known that…
Using the same situation in Question 2, if it is known that 25 out of the 250 students went to an SI session to help them study for Exam 3, then this proportion 25/250 = 0.1 is considered a _____ and would have the symbol ____.
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