Mathematics, 24.03.2020 21:33 bludragonfly33
A toy manufacturer wants to know how many new toys children buy each year. A sample of 1417 children was taken to study their purchasing habits. Construct the 99% confidence interval for the mean number of toys purchased each year if the sample mean was found to be 7.7. Assume that the population standard deviation is 1.8. Round your answers to one decimal place.
Answers: 3
Mathematics, 21.06.2019 17:00
Which expression is equivalent to 8(k + m) − 15(2k + 5m)?
Answers: 1
Mathematics, 21.06.2019 22:30
Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14
Answers: 1
Mathematics, 22.06.2019 00:00
Iwill arward ! , i if bt ≅ eu , bu ≅ et , prove: ∠b ≅ ∠e. fill in the blanks: draw segment ut ≅ bt≅ bu ≅ △ubt ≅ △
Answers: 1
A toy manufacturer wants to know how many new toys children buy each year. A sample of 1417 children...
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