1. Find a triangulation for P^2.

An office equipment corporation performs preventive maintenance and repair on the line of copiers that it sells. For 45 recent service calls data has been collected on the number of copiers serviced during the call and the number of minutes spent on the call by the service person. The company would like to develop a regression model that can be used to predict the amount of time (in minutes) that a call will require based on the number of copiers that need to be serviced.

(c)        Interpret the value of the sample slope in the context of this problem.

(d)          Find a 95% confidence interval for the population slope.

(e)          Report and interpret the value of the coefficient of determination R². Also calculate the value of the correlation coefficient r.

An office equipment corporation performs preventive maintenance and repair on the line of copiers that it sells. For 45 recent service calls data has been collected on the number of copiers serviced during the call and the number of minutes spent on the call by the service person. The company would like to develop a regression model that can be used to predict the amount of time (in minutes) that a call will require based on the number of copiers that need to be serviced.

(c)        Interpret the value of the sample slope in the context of this problem.

(d)          Find a 95% confidence interval for the population slope.

(e)          Report and interpret the value of the coefficient of determination R². Also calculate the value of the correlation coefficient r.

consider the function

f(x)=3x-5/sqrt x^2+1. given f'(x)=5x+3/(x^2+1)^3/2 and f''(x)=-10x^2-9x+5/(x^2+1)^5/2

a) find the local maximum and minimum values. Justify your answer using the first or second derivative test . round your answers to the nearest tenth as needed.

b)find the intervals of concavity and any inflection points of f. Round to the nearest tenth as needed.

c)graph f(x) and label each important part (domain, x- and y- intercepts, VA/HA, CN, Increasing/decreasing, local min/max values, intervals of concavity/ inflection points of f?

2.Put these events in the correct chronological sequence:

1. Upper motor neuron fires an action potential

2. T-tubules convey action potentials into the interior of the cell.

3. Acetylcholine is released from the lower motor neuron.

4. Ca2+ is released from the sarcoplasmic reticulum.

A) 1, 2, 3, 4

B) 3, 1, 2, 4

C) 2, 1, 4, 3

D) 1, 3, 2, 4

E) 4, 3, 2, 1

4.Which of the following sequences represent muscle contraction?

A)Action Potential leads to Ca++ release- troponin pulls troposmyosin -Ca++ binds to troponin- away the myosin binding site- myosin heads pull actin toward the M line - myosin head binds to myosin binding site on actin

B)Action Potential leads to Ca++ release- - myosin head binds to myosin binding site on actin- Ca++ binds to troponin--troponin pulls troposmyosin away from the myosin binding site - myosin heads pull actin toward the M line

C)Action Potential leads to Ca++ release- Ca++ binds to tropomyosin-tropomyosin pulls troponin away from the myosin binding site- myosin head binds to myosin binding site on actin- myosin heads pull actin toward the M line

D)Action Potential leads to Ca++ release- Ca++ binds to troponin-troponin pulls troposmyosin away the myosin binding site- myosin head binds to myosin binding site on actin- myosin heads pull actin toward the M line

E)Ca++ binds to troponin -Action Potential leads to Ca++ release- -troponin pulls

Peas heterozygous for three independently assorting genes were intercrossed.

(example cross: Aa Bb Cc x Aa Bb Cc )

What proportion of the offspring will be homozygous for one gene and heterozygous for the other two?

(hint: apply binomial expansion equation)

1/4

3/8

1/8

3/16

1/2

already answered 1/4 and 1/2 and they were incorrect

Consider the following snapshot of a system that has four resource types: A, B,
C, and D and five processes, P0, P1, P2, P3, and P4.

Allocation Max
A B C D A B C D
P0 3 0 1 5 5 1 1 7
P1 2 2 1 0 3 2 1 1
P2 3 1 2 1 3 3 2 1
P3 0 5 1 0 4 6 1 2
P4 4 2 1 3 6 3 2 5

Consider the situation in which Available = (0, 2, 1, 2). Give an example of a request
from P0 that can be served from the available resources, does not violate the maximum resources declared by the process but causes the system to be in a non-safe state as defined by the banker’s algorithm. Show all work (how the Available array changes after each step of the algorithm).

1. Explain the rule for determining the optimal use of a multiple resources when minimizing costs, then determine the least cost manner of producing 138 units of output given that the price of labor is $4 and the price of capital is $8

1.Which acid is the strongest?
  
H2X, Ka1 = 1×10-4
  
HX, Ka = 1×10-7
  
H2X, Ka1 = 1×10-5
  
HX, Ka = 1×10-5

2.Radioactive decay is a first-order rate process. The time required to reduce the activity from 800 counts/min to 100 counts/min for a radioactive sample with a half−life of 30 years is

3.This two-step mechanism has been suggested for a reaction:

N2O(g) + H2(g) N2(g) + H2O(g)

H2(g) + 2NO(g) N2O(g) + H2O(g)

3.Which choice correctly identifies an intermediate and a catalyst?

Intermediate Catalyst

N2O(g) NO(g)

none N2O(g)

N2O(g) none

H2O(g) none

Derive below Results 1 to 4 from Axioms 1 to 3.

Axiom 1: P(A)≥ 0

Axiom 2: P(S)=1

Axiom 3: If A and B are mutually exclusive events, then P(A ∪ B)= P(A)+P(B)

Result 1: P(Ac)=1−P(A)

Result 2: For any two events A and B, P (A∪B) = P (A)+P (B)−P (A∩B)

Result 3: For any two events A and B, P(A) = P(A ∩ B) + P(A ∩ Bc)

Result 4: If B ⊂ A, then A ∩ B = B. Therefore, P(A) − P(B) = P(A ∩ Bc), and P(A) ? P(B).