Mathematics, 22.03.2021 16:50, angelcjsdfv7139
An ecological group suspects dolphins are consuming dangerous levels of arsenic in a region of the world. Dangerous levels of arsenic are classified when they
reach beyond 7.0 parts per million. A random sample of 28 dolphins in the region were tested and the data is shown in the stemplot.
Arsenic Levels
2 4
2
3 23
3 679
4 013
4 577
5 01144
5 78
6 34
6 6
7 013
7 567
Key: 214 2.4 parts per million
Part A: What proportion of the dolphins in the sample have dangerous levels of arsenic in their systems? (4 points)
Part B: Construct and interpret a 99% confidence interval for the mean arsenic levels of the dolphins if the sample of 28 dolphins has a mean arsenic level of 5.26
parts per million and standard deviation of 1.49 parts per million (6 points
30 POINTS PLEASE HELP!!!
Answers: 3
Mathematics, 21.06.2019 19:00, Brendah4962
Solve the equation using the zero-product property. -3n(7n - 5) = 0 a. 0, -5/7 b. -1/3, -5/7 c. -1/3, 5/7 d. 0, 5/7
Answers: 2
Mathematics, 21.06.2019 19:20, SmolBeanPotato
Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1
Answers: 1
An ecological group suspects dolphins are consuming dangerous levels of arsenic in a region of the w...
Mathematics, 06.11.2019 06:31
Mathematics, 06.11.2019 06:31
History, 06.11.2019 06:31
English, 06.11.2019 06:31
Mathematics, 06.11.2019 06:31