Mathematics, 15.11.2019 20:31 10040813
Atoy manufacturer wants to know how many new toys children buy each year. assume a previous study found the standard deviation to be 1.5. she thinks the mean is 6.9 toys per year. what is the minimum sample size required to ensure that the estimate has an error of at most 0.11 at the 80% level of confidence? round your answer up to the next integer.
Answers: 1
Mathematics, 21.06.2019 19:00
To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36
Answers: 1
Mathematics, 21.06.2019 19:30
Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?
Answers: 2
Mathematics, 21.06.2019 22:00
Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2
Answers: 1
Atoy manufacturer wants to know how many new toys children buy each year. assume a previous study fo...
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