Question

According to Crown ATM Network, the mean ATM withdrawal is $67. Assume that the standard deviation for withdrawals is $35.
(a) Do you think the variable “ATM withdrawal” is normally distributed? If not, what shape would you expect the variable to have?
(b) If a random sample of 50 ATM withdrawals is obtained, describe the sampling distribution of x̄, the mean withdrawal amount.
(c) Determine the probability of obtaining a sample mean withdrawal amount between $70 and $75.


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  • CreatedApril 27, 2015
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