Mathematics, 27.11.2019 21:31, ayeequeen6392
The acidity of soils is measured by a quantity called the ph, which may range from 0 (high acidity) to 14 (high alkalinity). a soil scientist wants to estimate the average ph for a large field by randomly selecting n core samples and measuring the ph in each sample. although the population standard deviation of ph measurements is not known, past experience indicates that most similar soils have a ph value between 5.9 and 9.5. suppose the scientist would like the sample mean to be within 0.15 of the true mean with probability 0.90. what is the minimum number of core samples the scientist should take? (round your answer up to the nearest whole number.)
Answers: 2
Mathematics, 21.06.2019 18:00, bobjill1609
The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.
Answers: 2
Mathematics, 21.06.2019 20:00, mechelllcross
Which expression is rational? 6. , square root two, square root 14, square root 49
Answers: 1
Mathematics, 21.06.2019 21:30, kingdrew27
Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?
Answers: 2
Mathematics, 21.06.2019 23:50, vickyarroyo8888
Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.
Answers: 3
The acidity of soils is measured by a quantity called the ph, which may range from 0 (high acidity)...
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