In a survey, 13 people were asked how much they spent on their child’s last birthday…

In a survey, 13 people were asked how much they spent on their
child’s last birthday gift. The results were roughly bell-shaped
with a mean of $39 and standard deviation of $18. Estimate how much
a typical parent would spend on their child’s birthday gift (use a
95% confidence level).

Give your answers to one decimal place. Provide the point estimate
and margin or error.