subject
Mathematics, 24.06.2020 21:01 hugoreyes16jr

A toy manufacturer wants to know how many new toys children buy each year. Assume a previous study found the standard deviation to be 1.8. She thinks the mean is 5.8 toys per year. What is the minimum sample size required to ensure that the estimate has an error of at most 0.12 at the 80% level of confidence

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 20:00
Bring the fraction a/a-4 to a denominator of 16-a^2
Answers: 1
question
Mathematics, 21.06.2019 23:30
Which graph represents the same relation is the sa which graph represents the same relation as the set {(-3-2)}
Answers: 3
question
Mathematics, 22.06.2019 02:00
Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?
Answers: 2
question
Mathematics, 22.06.2019 02:30
The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.
Answers: 3
You know the right answer?
A toy manufacturer wants to know how many new toys children buy each year. Assume a previous study f...
Questions
question
Chemistry, 04.11.2019 05:31
Questions on the website: 13722363