4. Imagine that 41 randomly selected Miramar students are asked to measure the length of one
of their feet. Suppose that the sample mean foot length (x) turns out to be 23.4 centimeters and
that the sample standard deviation of the foot lengths turns out to be 5.1 centimeters.
a) Find a 95% confidence interval for ul, the mean foot length among all Miramar students.
(4 pts)
(2 pts each)
b) Would you expect about 95% of all Miramar students to have foot lengths within this
interval? Explain.
€

b. the decimal could be two-tenths.

step-by-step explanation:

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

answer: 819.89 miles across america

step-by-step explanation: