The water department checks the city water supply on a regular basis for
contaminants such as t...
Mathematics, 08.10.2019 01:00 jermainedwards
The water department checks the city water supply on a regular basis for
contaminants such as trihalomethanes (thms). the water department takes
200 samples and estimates that the concentration of thms in your drinking
water is 3 ppb (parts per billion), with a standard deviation of 0.3 ppb.
assuming the samples were random and unbiased, how much confidence
can you have in this data?
Answers: 3
Mathematics, 21.06.2019 18:40, miguel3maroghi
Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.
Answers: 3
Mathematics, 21.06.2019 22:20, jhonnysoriano9053
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
Social Studies, 17.09.2019 19:30
Biology, 17.09.2019 19:30
Geography, 17.09.2019 19:30
Mathematics, 17.09.2019 19:30
Biology, 17.09.2019 19:30
Mathematics, 17.09.2019 19:30