Mathematics, 08.02.2021 18:50 deduran
Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are concerned that perchlorate is present in unsafe amounts in their drinking water. Drinking water is considered safe when the average level of perchlorate is 24.5 parts per billion (ppb) or less. A random sample of 28 water sources in this area produces a mean perchlorate measure of 25.3 ppb. Which of the following is an appropriate alternative hypothesis that addresses their concern?
A) H: 25.3.
B) H: > 25.3.
C) H u <24.5.
D) Hu> 24.5. 27.
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 18:20
Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.
Answers: 1
Mathematics, 21.06.2019 18:30
Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined
Answers: 1
Mathematics, 21.06.2019 19:00
1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is:
Answers: 2
Mathematics, 21.06.2019 21:00
The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry
Answers: 2
You know the right answer?
Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are...
Questions
Mathematics, 18.03.2021 02:40
Mathematics, 18.03.2021 02:40
Mathematics, 18.03.2021 02:40
English, 18.03.2021 02:40
Mathematics, 18.03.2021 02:40
Mathematics, 18.03.2021 02:40
Mathematics, 18.03.2021 02:40
Mathematics, 18.03.2021 02:40
History, 18.03.2021 02:40
English, 18.03.2021 02:40
History, 18.03.2021 02:40
