Mathematics, 02.01.2020 21:31 joeylozier15
The department of public safety has an old memo stating that the number of accidents per week at a hazardous intersection varies according to a normal distribution, with a mean of 2.2 and a standard deviation of 1.4. department officials implemented a new safety plan, heavier police patrols and new signs, to see if they could reduce the average number of accidents at this intersection. they recorded the number of accidents per week for 52 weeks. they find that the average over that period was two accidents per week. what is the p ‑value for the test of h 0 : μ = 2.2 against h a : μ < 2.2 ?
Answers: 3
Mathematics, 21.06.2019 15:30
Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?
Answers: 3
Mathematics, 21.06.2019 22:00
Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6
Answers: 1
Mathematics, 21.06.2019 22:30
Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?
Answers: 1
The department of public safety has an old memo stating that the number of accidents per week at a h...
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