In: Math

. TRUE/FALSE: (Please use one sentence to explain why it is FALSE if you decide that one statement is FALSE)

(a) The regression through origin model is designed to fit count responses only

(b) The Bonferroni method is always the best way of computing joint CI's of the mean responses, i.e., provides the group of CIs with the narrowest ranges which achieves the claimed family confidence coefficient.

(c) When you want to obtain the smallest variance of the "regression coefficient estimate", you might choose to control the response variable values.

(d) We do not have to check the model assumptions when the regression through origin model is used.

Part a)

A regression through origin model is designed to fit all such models where x = 0 gives a meaningless response through the intercept based linear model. Hence it not all fits the count responses, it does fit other form of data as well

Hence this statement is false

Part b)

Yes this statement is true, bonferroni method is best way for computing joint confidence intervals of mean responses

Part c)

Yes this statement is also true, when we want the least error we need to ensure that all the other factors or variables present in the experimental environment do not change or fluctuate to provide the best relation between the variables included in the study

Part d)

That is not true, for every model it is important to check the
model assumptions, whether it is simple liner regression model or
the regression model through origin. It is important to esure that
the assumptions are valid for the model to be functional and
effective.

hence this statement is false too

. True or False, and explain (one
sentence is sufficient)
A.) If P > ATC then a firms is
making economic profit.
B.) In a perfectly competitive
industry, it is possible for a firm to earn P > ATC in the long
run.
C.) If P = AVC in the long run, then
the firm should shut down and exit.
D.) If P < ATC in the short run,
then a firm should shut down and exit.
E.) In a...

True or False (please explain the reasons of why you choose true
or false)
1. A producer can charge a price far greater than marginal cost
and earn large profits so long as barriers to entry prevent
competitors from entering the industry.
2. Relative to competitive pricing, oligopoly pricing increases
producers’ profits, reduces consumers’ surplus, and (in net)
reduces social surplus.

Which one of the following statements is true? Please explain
each choice: why it is true/false.
(a) The Burgers vector of an edge dislocation is normal to the
dislocation line and normal to the slip plane.
(b) The Burgers vector of a screw dislocation is normal to the
dislocation line and parallel to the slip plane.
(c) When a screw dislocation enables slip in a single crystal,
the dislocation line remains in the slip plane.
(d) BCC crystals do not...

TRUE/FALSE Please indicate whether each question is true or
false and provide a 1 sentence explanation
5. Temperature is associated with terrestrial productivity. If
the global temperature increased by 10C we would expect that
grasslands would have an increase in both GPP and NPP.
6. In most ecosystems, the rate of phosphorous recycling through
fixation exceeds the rate added through weathering.
7. An invasive insect called the Emerald Ash Borer has been
killing off ash trees across eastern North America...

True False Question ,please explain it 3
sentence
A regular saving may be regarded as fixed expense

Indicate whether the statement is true or false. If false,
please explain why. (Note that if the explanation is incomplete,
you may not get the full credits.)
a. Although payroll taxes are imposed on firms, workers bear
more burdens than firms when the elasticity of labor supply is
greater than the elasticity of labor demand. (4 pts)
b. There might be a situation in which dangerous jobs offer
lower wages than safe jobs even if there exist compensating wage
differentials....

True/False Questions.
For each question below, please answer “true” or “false” and
explain why.
6. A consumer with convex preferences who is indifferent between
the bundles (5,2) and (11,6) will like the bundle (8,4) at least as
well as either of the first two bundles. Assume these two goods are
imperfect substitutes.
7. The marginal rate of substitution is always the same constant
number when the goods are imperfect substitutes and no matter how
many of each good is being...

TRUE OR FALSE? Please make sure you state why it is true or false.
1. Gases travel into and out of plant leaves through pores
called storma.
2. Mesophyll cells acquire the water required for
photosynthesis by absorbing it from the humid atmosphere.
3. Carbon fixation occurs in both photosynthesis and cell
respiration.
4. Plants store sugars made during photosynthesis is
cellulose, a polysaccharide which serves as the storage form of
carbohydrates fuel.

Please answer with true and false answers, but use your
explanations why it would true or false and use diagrams if
necessary.
5. Suppose firms see inventories levels fall below the levels
they had planned. This will cause aggregate output to increase.
6. Ceteris paribus, an increase in the domestic price level
increases the price of domestic goods increases relative to foreign
goods resulting in a downward shift of aggregate expenditures and a
leftward shift of the aggregate demand curve....

True or False. If false explain why it is false and explain what
is meant by all parts of the statement.
The nuclear localization is a post-translational
modification.

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