Mathematics, 23.04.2020 17:48 eddyreynoso5025
An environmental researcher is concerned that a new industrial plant has made the water in a nearby stream more acidic. The pH measures the amount of acidity or alkalinity of a substance (Pure water would have a pH of 7, numbers lower than 7 indicate acids, numbers greater than 7 indicate alkaline bases). The researcher collects 40 water samples and has found an average pH of 5.9. The researcher would like to conduct a test of hypothesis to determine if the water is significantly acidic.
Select all of the correct null and alternative hypotheses
A) H0: mu = 0B) H0: mu = 7C) H0: mu cannot equal 7D) H0: mu = 0E) HA: mu cannot equal mu0F) HA: mu < 7G) HA: mu > 7H) HA: mu < 0
Answers: 3
Mathematics, 21.06.2019 15:00, wrightstephanie193
Which expression is equivalent to 2x^2+7x+4?
Answers: 3
Mathematics, 21.06.2019 19:50, ghwolf4p0m7x0
The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50
Answers: 1
Mathematics, 21.06.2019 21:00, annikafischer
Askateboard ramp is in the shape of a right triangle what is the height of the ramp
Answers: 3
Mathematics, 21.06.2019 22:10, KekePonds1021
Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?
Answers: 1
An environmental researcher is concerned that a new industrial plant has made the water in a nearby...
Mathematics, 18.08.2021 14:00
Mathematics, 18.08.2021 14:00
French, 18.08.2021 14:00
Mathematics, 18.08.2021 14:00
History, 18.08.2021 14:00
Mathematics, 18.08.2021 14:00