Answer:
1/3
Step-by-step explanation:
2/3 is 2/3 so 1/3 is missing
Answer:
H0:p=0.5
H1:p>0.5
Sample proportion=492/792=0.6276
Test statistic:
z=(0.6276-0.5)/sqrt(0.5*(1-0.5)/784)
z=7.14
p-value=P(z>7.14)=0
Step-by-step explanation:
Answer:
No solution
Step-by-step explanation:
multiplying both sides by 2 gives |x|=-6 but an absolute value can't be negative so there are no solutions
see more at: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-negative-number-topic/cc-6th-absolute-value/a/intro-to-absolute-value
Answer:
Exchange rates; environmental impact
Step-by-step explanation:
Exchange rate and currency risks are to key country success factors as land costs and environmental impact are to key region success factors.
Exchange rate and currency risks are synonymous to each other, as exchange rate cause a country to develop or under developed because it will reduced the value of investment dominated in a foreign currency .
its will lead to less profit being made by investor.
Exchange rate cause currency risk during inflation and deflation and lead to country being in recession.
For land cost and environmental impact: these two are also synonymous.
Urban development of any country highly depends on its climatic condition and environmental impact on citizens.
these urban development is related to environmental impact as in air and water pollution, global warming, deforestation, and loss of wild life habitat, e.t.c
environmental impact determined the amount of immigrant and emigrant in a particular zoning and this determined the cost of the land
Answer:
B.
Step-by-step explanation:
There are 20C4 = 4845 ways to take a sample of 4 from 20.
For choices A and C, the mean will be over-estimated if 3 of the 4 samples are of the higher value. There are (10C3)×10 = 1200 samples that will cause the mean to be over-estimated.
For choice D, every sample will correctly estimate the mean, so there are 0 samples that will cause the mean to be over-estimated.
For choice B, any sample that contains all 2s will over-estimate the mean. There are 19C4 = 3876 such samples.
Of the data sets listed, a sample of 4 from data set B is most likely to be one of the samples that will over-estimate the mean.
_____
nCk = n!/(k!(n-k)!)
