How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F
Posted: Wed May 11, 2022 11:52 am
How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures
from 20°F to 45°F. A random sample of prices
($) for sleeping bags in this temperature range is given below.
Assume that the population of x values has an
approximately normal distribution.
(a)
Use a calculator with mean and sample standard deviation keys to
find the sample mean price x and sample standard
deviation s. (Round your answers to four decimal
places.)
x=$ s=$
(b)
Using the given data as representative of the population of
prices of all summer sleeping bags, find a 90% confidence interval
for the mean price 𝜇 of all summer sleeping bags. (Round
your answers to two decimal places.)
lower limit$ upper limit$
bag that should keep you warm in temperatures
from 20°F to 45°F. A random sample of prices
($) for sleeping bags in this temperature range is given below.
Assume that the population of x values has an
approximately normal distribution.
(a)
Use a calculator with mean and sample standard deviation keys to
find the sample mean price x and sample standard
deviation s. (Round your answers to four decimal
places.)
x=$ s=$
(b)
Using the given data as representative of the population of
prices of all summer sleeping bags, find a 90% confidence interval
for the mean price 𝜇 of all summer sleeping bags. (Round
your answers to two decimal places.)
lower limit$ upper limit$