Mathematics, 26.12.2019 05:31 Caleb0018
Aparticular concentration of a chemical found in polluted water has been found to be lethal to 40% of the crayfish that are exposed to the concentration for 24 hours. 22 crayfish are placed in a tank containing this concentration of chemical in the water.
(a) what is the probability that 13 or 17 survive?
(b) what is the probability that at least 17 survive?
(c) what is the probability that at most 16 survive?
(d) what number of crayfish are expected to survive?
(e) what is the variance in the number of crayfish that are expected to survive? no actual crayfish were harmed in the making of this question.
Answers: 3
Mathematics, 20.06.2019 18:04
A25-inch wide drum is used in a marching band. what area does the top of the drum cover? round to the nearest hundredth. (use 3.14 for pi.)
Answers: 1
Mathematics, 21.06.2019 20:00
Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?
Answers: 1
Mathematics, 21.06.2019 20:40
What are the values of each variable in the diagram below?
Answers: 2
Mathematics, 21.06.2019 21:50
Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x
Answers: 3
Aparticular concentration of a chemical found in polluted water has been found to be lethal to 40% o...
Mathematics, 17.02.2020 06:01
Mathematics, 17.02.2020 06:01
Health, 17.02.2020 06:01
Mathematics, 17.02.2020 06:01
History, 17.02.2020 06:01
Mathematics, 17.02.2020 06:01
Social Studies, 17.02.2020 06:02
Mathematics, 17.02.2020 06:03
Social Studies, 17.02.2020 06:03
Mathematics, 17.02.2020 06:03
Mathematics, 17.02.2020 06:03
Mathematics, 17.02.2020 06:03
Mathematics, 17.02.2020 06:03