May I please see the training manual.
Answer: b. The instrument is correlated with x1.
d. The instrument does not directly influence y, except through x1.
Explanation:
Based on the information given in the question, the necessary characteristics of a suitable instrument include:
• The instrument is correlated with x1.
• The instrument does not directly influence y, except through x1.
Some of the criteria for an instrument variable are the fact that it should have a causal effect on independent variable and also the dependent variable isn't directly affected except through the independent variable which is x1 in this scenario.
Therefore, the correct option are B and D.
Answer:
Check the explanation
Explanation:
Rachel Carson received numerous attacks by agricultural and chemical industries due to the book she wrote called -Silent Spring', where she explained the repercussions to the atmosphere and that of human health in the using pesticides.
She has been tagged as a radical and unqualified scientist whose knowledge about science is limited. She was also accused of wanting to protect the lives of all the insects that spread diseases in humans and plants.
However, if we read concerning whom Rachel Carson was and what she stood for, we’ll notice that the arguments in various quarters are completely misguided.
She was an exceptional scientist and a writer on science topics, she investigated and cautioned on how the chemicals that government spread in the farms to kill pathogens insects, are also dangerous to all living things including humans.
Some of the chemical industry representatives even in this present time still do not concur with her; they are only concerned how to produce and sell more chemicals and they don’t even worry about their environmental consequences and damage. This is reason they prefer to berate her work and researches.
Answer:
$22,569.48 is amount i must have to deposit today
Explanation:
FV = Future Value
, PV = Present Value
, r = rate of interest
, n= no of period
PV = FV / (1 + r )n
PV = 32000 / (1 + 3%)^4*(1+3.6%)^3
PV= $32,000/ (1 + 0.03)^4*(1+0.036%)^3
PV= $32,000/ (1.03)^4*(1.036%)^3
PV= $32,000/ (1.03)^4*(1.036)^3
PV= $32,000/ 1.12550881 * 1.111934656
PV= $32,000/ 1.251492251
PV = $22,569.47514
PV = $22,569.48
$22,569.48 is amount i must have to deposit today
Answer:
the interest rate is missing, so I looked for similar questions and found that the semiannual interest rate is 3%.
first of all, we must determine the amount of money that we need to have in our account in order to be able to withdraw $25,000 in 10 years.
You will start making your semiannual deposits today and they will end in exactly 2 years, so we need to find out the present value of the $25,000 in two years:
PV = $25,000 / (1 + 3%)¹⁶ = $15,579.17
that is now the future value of our annuity due:
FV = semiannual deposit x FV annuity due factor (3%, 5 periods)
$15,579.17 = semiannual deposit x 5.46841
semiannual deposit = $15,579.17 / 5.46841 = $2,848.94
