Mathematics, 02.04.2021 06:40, dwilliams635
A government agency constructs a 95% confidence
interval to estimate the mean amount of pollution in
a city's river. Assume that all conditions have been
met. The one-sample t-interval is (1.26. 3.91).
Water with 4.00 units of pollution or more, on
average, of this type of measure is said to be
contaminated. Is it reasonable to believe that this
city's river is contaminated?
O No. Because 4.00 is close to the upper bound of
the interval, it is reasonable to believe the river is
not contaminated.
O No. Because the interval representing the mean
amount of pollution is entirely below 4.00, it is
reasonable to believe the river is not
contaminated.
o Yes. Because 4.00 is close to the upper bound of
the interval, it is reasonable to believe the river is
contaminated
0 Yes. Because the interval representing the mean
amount of pollution is entirely below 4.00, it is
reasonable to believe the water is contaminated.
Answers: 2
Mathematics, 21.06.2019 17:30, Serenitybella
Which are factor pairs of 350? choose all answers that are correct. a) 30 and 12 b) 35 and 10 c) 70 and 5 d) 2 and 125
Answers: 2
Mathematics, 21.06.2019 23:00, freebyyy7032
Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain
Answers: 2
A government agency constructs a 95% confidence
interval to estimate the mean amount of pollution i...
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