Mathematics, 21.12.2019 06:31 Issaking0131
Audrey, an astronomer is searching for extra-solar planets using the technique of relativistic lensing. though there are believed to be a very large number of planets that can be found this way, actually finding one takes time and luck; and finding one planet does not at all with finding planets of other stars in the same part of the sky. audrey is good at it, and finds one planet at a time, on average once every three months.
a.) find the expected value and standard deviation of the number of planets she will find in the next two years.
b.) when she finds her sixth new planet, she will be eligible for a prize. find the expected value and standard deviation of the amount of time until she is eligible for that prize.
c.) find the probability that she will become eligible for that prize within one year.
Answers: 2
Mathematics, 21.06.2019 16:30
What is the first step of an indirect proof of a number that is divisible by two
Answers: 2
Mathematics, 21.06.2019 20:00
Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.
Answers: 1
Mathematics, 21.06.2019 22:20
Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .
Answers: 1
Audrey, an astronomer is searching for extra-solar planets using the technique of relativistic lensi...
History, 10.10.2019 20:30
Geography, 10.10.2019 20:30
Social Studies, 10.10.2019 20:30
Mathematics, 10.10.2019 20:30
Biology, 10.10.2019 20:30
History, 10.10.2019 20:30
Mathematics, 10.10.2019 20:30