Mathematics, 10.05.2021 18:00, igtguith
Alma has developed a new kind of antibiotic. For the antibiotic to be sufficiently effective, it has to kill at least
90% of bacteria when applied to a harmful bacteria culture. She applied her antibiotic to a petri dish full of
harmful bacteria, waited for it to take effect, and then tried to estimate the percentage of dead bacteria in it.
She took a random sample of 300 bacteria and found that 94% of them were dead. Then she calculated the
margin of error and found that the true percentage of dead bacteria is most likely to be above 90%.
What type of statistical study did Alma use?
Choose 1
Sample study
Experiment
Observational study
Answers: 2
Mathematics, 21.06.2019 17:00, Damani14
According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.
Answers: 2
Mathematics, 21.06.2019 22:00, d0ram0UsE
Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120
Answers: 3
Mathematics, 21.06.2019 23:00, NetherisIsTheQueen
Solve for n. round to the tenths place, if necessary. 14.2 cups of flour6 loaves of bread= 20 cups of flour n
Answers: 2
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