Mathematics, 28.11.2019 22:31 sophiat17
Soil acidity is measured by a quantity called the ph, which may range from 0 to 14 for soils ranging from extreme alkalinity to extreme acidity. many soils have an average ph in the more-or-less- neutral 5 to 8 range. a scientist wants to estimate the average ph for a large field from n randomly selected core samples, measuring the ph of each sample. from experience he expects the standard deviation of the measurements to be 0.5. if the scientist selects n = 40 samples, find the approximate probability that the sample mean of the 40 ph measurements will be within 0.2 of the true average ph for the field.
Answers: 3
Mathematics, 21.06.2019 21:00, kprincess16r
Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)
Answers: 1
Mathematics, 21.06.2019 21:30, stichgotrich849
Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?
Answers: 3
Mathematics, 21.06.2019 23:00, look26goingjbgy
Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1
Answers: 3
Soil acidity is measured by a quantity called the ph, which may range from 0 to 14 for soils ranging...
Mathematics, 04.12.2020 23:30
Mathematics, 04.12.2020 23:30
Mathematics, 04.12.2020 23:30
Mathematics, 04.12.2020 23:30