Mathematics, 29.04.2021 04:30 monk68
The mean on a statewide geography test was 74 with a standard deviation of 12. West County sampled the scores of some of its students and reported a mean of 79 with a margin of error of ±1.9.
What is the range of reasonable means for West County’s sample?
Round to the nearest tenth.
Answers: 2
Mathematics, 21.06.2019 14:30
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
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During how many months was the difference between the number of days with homework and with no homework greater than 6?
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The mean on a statewide geography test was 74 with a standard deviation of 12. West County sampled t...
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