toula987
May 4, 2014, 07:50 PM
QUESTION 1
:
A recent survey of __60___ guests at the Backpackers Paradise Hotel gave a sample average daily food
expenditure of x = $_43____ with a sample standard deviation, s = $___11__.
a. Calculate a 95% confidence interval for the unknown population mean, μ.
b. What sample size would be required to be 95% sure of estimating the unknown population mean to
within ±$5?
c. A census of guests 2 years ago gave a
population mean expenditure of $_35____. Test, at the 5% level
of significance, whether your data supports the hypothesis of a significant increase in the average daily food expenditure over the 2 year period. [Hint:This is a 1-sample test]
:
A recent survey of __60___ guests at the Backpackers Paradise Hotel gave a sample average daily food
expenditure of x = $_43____ with a sample standard deviation, s = $___11__.
a. Calculate a 95% confidence interval for the unknown population mean, μ.
b. What sample size would be required to be 95% sure of estimating the unknown population mean to
within ±$5?
c. A census of guests 2 years ago gave a
population mean expenditure of $_35____. Test, at the 5% level
of significance, whether your data supports the hypothesis of a significant increase in the average daily food expenditure over the 2 year period. [Hint:This is a 1-sample test]