Mathematics, 11.06.2021 02:50 kprincess16r
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, nine times out of ten, seniors
will have an average score within 3% of 78%.
Is the confidence interval at 90%, 95%, or 99%? What is the margin of error? Calculate
the confidence interval and explain what it means in terms of the situation. (10 points)
Answers: 2
Mathematics, 21.06.2019 14:30, lizzie3545
Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9
Answers: 3
Mathematics, 21.06.2019 16:40, madisongibson62
What is the distance between the points (2 -3) and (-6 4) on the coordinate plane
Answers: 1
Mathematics, 21.06.2019 20:30, shonesam98
Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters
Answers: 1
A field test for a new exam was given to randomly selected seniors. The exams were
graded, and the...
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