Mathematics, 01.09.2021 18:10 school7067
g We want to test whether the mean lead levels in the drinking water is worse in city A and City B. In order to test this, a sample of 49 different water samples was taken from city A, and a sample was taken from 36 different water samples in city B. City A has a sample average of 2.3 micrograms of lead per deciliter of water, and city B has a sample average 1.4 micrograms of lead per deciliter of water. Further, city A has a known standard deviation of , and city B has a known standard deviation of . Find the p-value for the following hypothesis test: vs .
Answers: 2
Mathematics, 21.06.2019 14:50
Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift
Answers: 2
Mathematics, 21.06.2019 19:30
Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)
Answers: 1
g We want to test whether the mean lead levels in the drinking water is worse in city A and City B....
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