Mathematics, 24.09.2020 16:01 glogaming16
Alice knows that 70% of the creatures in Wonderland are anthropomorphic animals. She randomly invites several of Wonderland’s inhabitants to a tea party. Depending on which inhabitants of Wonderland are chosen, the proportion of animals invited may vary. If Alice samples 120 inhabitants, what is the probability that more than 80% of the sampled inhabitants are animals? Give your answer to four decimal places.
Answers: 2
be the sample proportion of the creatures are anthropomorphic animals.![P(\hat{p}0.80)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\dfrac{0.80-0.70}{\sqrt{\dfrac{0.70\times (1-0.70)}{120}}})\\\\P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\dfrac{0.10}{\sqrt{\dfrac{0.70\times 30}{120}}})\\\\ =P(Z\dfrac{0.10}{\sqrt{0.00175}})\ \ \ \ \ [Z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}]\\\\ =P(Z\dfrac{0.10}{0.04183})\\\\\=P(Z2.39)\\\\=1-P(Z\leq2.39)\\\\=1- 0.9916= 0.0084](/tpl/images/0778/8885/c9d9c.png)
Another question on Mathematics
Mathematics, 21.06.2019 16:00
Atrucker had a load of grain containing 2 tons. she unloaded 1 ton and 1,200 pounds at the warehouse. how much grain does she still have left on the truck?
Answers: 1
Mathematics, 21.06.2019 16:00
Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.
Answers: 2
Mathematics, 21.06.2019 16:30
Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241
Answers: 2
Mathematics, 21.06.2019 19:30
Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost
Answers: 1
You know the right answer?
Alice knows that 70% of the creatures in Wonderland are anthropomorphic animals. She randomly invite...
Questions
Biology, 21.07.2019 12:10
Physics, 21.07.2019 12:10
Health, 21.07.2019 12:10
Biology, 21.07.2019 12:10
English, 21.07.2019 12:10
Mathematics, 21.07.2019 12:10
English, 21.07.2019 12:10
Mathematics, 21.07.2019 12:10
Chemistry, 21.07.2019 12:10
History, 21.07.2019 12:10
Mathematics, 21.07.2019 12:10
Mathematics, 21.07.2019 12:10
