Mathematics, 04.03.2020 05:38 lizzyhearts
An SRS of 350 high school seniors gained an average of ¯ x = 21 points in their second attempt at the SAT Mathematics exam. Assume that the change in score has a Normal distribution with standard deviation σ = 52 . (a) Find a 99 % confidence interval for the mean change in score μ in the population of all high school seniors. (Enter your answers rounded to two decimal places.) lower bound of confidence interval: upper bound of confidence interval:
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Mathematics, 21.06.2019 14:30
Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .
Answers: 3
Mathematics, 21.06.2019 16:20
Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?
Answers: 1
Mathematics, 21.06.2019 19:20
The suare root of 9x plus 7 plus the square rot of 2x equall to 7
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Mathematics, 21.06.2019 23:30
Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?
Answers: 1
An SRS of 350 high school seniors gained an average of ¯ x = 21 points in their second attempt at th...
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