uppose a manager wants to be 90% confident that the expected monthly withdrawals in a bank will be within a confidence interval of $500. Let us say that a study of a sample of clients indicates that the average withdrawals made by them have a standard deviation of $3500.If the bank has a total clients of only 120. What is the sample size? * (2 Points)

77

55

63

85

2-the determinant of standard error is ( a range , mode b- standard error , range c- sample size , range

3-Studying 50 firms over 10 years is called? ( 2 Points )a- Time series b-Cross sectional c- panel data d-None of the above