A random sample of 20 recent weddings in a country yolded a mean wedding cost of $26,342 38. Assume that recent wedding costs in this country are normally distributed with a standa deviation of $7900. Complete parts (a) through (c) below.
a. Determine a 95% confidence interval for the mean cost of all recent weddings in this country.

a) The 96% confidence interval is from $___ to $___
round to nearest cent

b) what’s the margin or error

Simba travel agency arranges trips for climbing mount kilimanjaro. for each trip, they charge an initial fee of \$100$100 in addition to a constant fee for each vertical meter climbed. for instance, the price for climbing to the shira volcanic cone, which is 30003000 meters above the base of the mountain, is \$400$400. let f(d)f(d) denote the fee of a trip ff (measured in dollars) as a function of the vertical distance climbed dd (measured in meters). write the function's formula. f(d)=