Mathematics, 21.07.2021 02:30 farh
Question 1 (10 points)
A scientist wishes to estimate the average depth of a river. He wants to be 99%
confident that the estimate is accurate within 2 feet. From another study, the
standard deviation of all of the depths is 4.38 feet. What is the minimum sample size
he should use?
32
320
319
31
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Answers: 2
Mathematics, 21.06.2019 18:30
Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?
Answers: 3
Mathematics, 21.06.2019 20:30
What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)
Answers: 2
Mathematics, 21.06.2019 20:30
Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2
Answers: 2
Mathematics, 22.06.2019 01:20
If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4
Answers: 1
Question 1 (10 points)
A scientist wishes to estimate the average depth of a river. He wants to be...
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