Mathematics, 17.12.2020 20:50, deezzzy
A field test for a new exam was given to randomly selected seniors. The exams were graded, and the sample mean and sample standard deviation were calculated. Based on the results, the exam creator claims that on the same exam l, nine times out of ten, seniors will have an average score within 3% of 69%. Is the confidence at 90%, 95%, or 99%? What is the margin error? Calculate the confidence interval and explain whit it means in terms of the situation.
Answers: 3
Mathematics, 21.06.2019 22:00, bobk1433
Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.
Answers: 2
Mathematics, 22.06.2019 00:30, byrdkellykellybyrd
Suppose that the function f is defined. , for all real numbers, as follows. _ \ 1/4x² -4 if x≠ -2 f(x)=< /_-1 if x=-2 find f(-5), f(-2), and f(4)
Answers: 3
A field test for a new exam was given to randomly selected seniors. The exams were graded, and the s...
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