Ace - AI Tutor
Ask Our Educators
Textbooks
My Library
Flashcards
Scribe - AI Notes
Notes & Exams
Download App
kevin hernandez

kevin h.

Divider

Questions asked

BEST MATCH

Last month, Brittney Corporation purchased and used the same quantity of material in producing its product, speed bumps for traffic control. View the direct materials information. Complete the following table. (Round your answers to two decimal places.) Direct materials information Medium speed bump Large speed bump Standard pounds per unit 16 16.5 Standard price per pound $ 1.00 $ 1.60 Actual quantity purchased and used per unit Actual price paid for material per pound $ 1.40 $ 2.30 Direct materials price variance $ 1,440 U $ 6,930 U Direct materials quantity variance $ 1,200 F Total direct material variance $ 5,490 U Number of units produced 300 600

View Answer
divider
BEST MATCH

17 of 21 Concepts completed Due in less than 4 hours Multiple Choice Question Which statement regarding technology and productivity is true? Technology affects worker output but does not improve the service provided. Technology may add to the quality of the service provided but not necessarily to the output per worker. The cost of adding technology to services does not improve the quality of the service offered. Need help? Review these concept resources. Read About the Concept

View Answer
divider
BEST MATCH

the mean length of the lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has a mean length different from 8.5 feet. If the builder observes that the sample mean of 25 pieces of lumber is 8.3 feet with a sample standard deviation of 1.2 feet. Use significance level = 0.05

View Answer
divider
BEST MATCH

2. Consider two nodes, A and B, use the slotted ALOHA protocol to contend for a channel of 10 Mbps (10M bit/s) trasmission bandwidth. Assume both nodes have an infinite number of packets to send. Suppose node A’s retransmission probability is 0.9 and B’s retransmission probability is 0.45. a) What is the total efficiency of the protocol with these two nodes? b) What are the average throughputs of node A and B respectively? c) Is node A’s average throughput twice as large as that of node B? If this is not the case, and assume that node A’s retransmission probability is fixed as 0.9, please suggest a new retransmission probability for node B that satisfies such condition. Please also briefly justify your answer. d) Suppose there are now 6 nodes, among which node A has a retransmission probability of 0.9 and all other nodes have the same retransmission probability of 0.8. Please compute the average throughputs of node A, and of any of the other nodes.

View Answer
divider
BEST MATCH

For gas exchange to be efficient, the respiratory membrane is At least 3 micometers thick Between 0.5 to 1 micrometer thick Between 5 and 6 micrometers thick Any thickness

View Answer
divider
BEST MATCH

Estimate the determinants of the change in total population in US counties over 2010-2021. Your sample consists of one hundred counties. 1. First, run linear regressions for the two models below. I. 𝑦̂ = 𝑏0 + 𝑏1π‘₯1 + 𝑏2π‘₯2 + 𝑏3π‘₯3 + 𝑏4π‘₯4 II. 𝑦̂ = 𝑏0 + 𝑏1π‘₯1 + 𝑏2π‘₯2 + 𝑏3π‘₯3 + 𝑏4π‘₯4 + 𝑏5π‘₯5 + 𝑏6π‘₯6 + 𝑏7π‘₯7 Dependent variables: The dependent variable is county growth in total population from 2010 to 2021. In the models, the dependent variable is 2021 π‘‘π‘œπ‘‘π‘Žπ‘™ π‘π‘œπ‘.βˆ’2010 π‘‘π‘œπ‘‘π‘Žπ‘™ π‘π‘œπ‘. 2010 π‘‘π‘œπ‘‘π‘Žπ‘™ π‘π‘œπ‘. . Independent variables: x1 = 1 if total 2010 county population is greater than 100,000 = 0 otherwise x2 - mean winter temperature within the state. x3 – percent of adults over the age of 25 within the county with at least a Bachelor’s degree in 2010. x4 – percent of county residents age 50 and over in 2010. x5, x6, x7 represent dummy variables indicating the Census Region the county is in. Use the US Census to construct the population, education and age variables.

View Answer
divider
BEST MATCH

Help seeking for psychosocial issues in adult life often results from ________________. Group of answer choices Self-revelation Physical impairments Personal tragedies Family/friends urging the person to seek help

View Answer
divider
BEST MATCH

Economic models Suppose an economist theorizes that the price level in the economy is directly related to the money supply, or the amount of money in circulation in the economy. The economist proposes the following relationship: P=AΓ—M β€’ P=Price Level β€’ M=Money Supply β€’ A=A composite of other factors, including real GDP, that change very slowly over time. What method could an economist use to gather empirical data in order to test the proposed relationship between money and the price level? Economists do not usually develop theoretical models of the economy but only analyze summary statistics about the current state of the economy. Unlike researchers in the hard sciences, economists cannot study complex relationships using data. An economist would look for data on past changes in the money supply and note the resulting changes in the price level.

View Answer
divider
BEST MATCH

I'm sorry, I cannot fulfill that request.

View Answer
divider
BEST MATCH

Given the following graph, determine the domain and range: y = x^3 - 2x^2 - 3x

View Answer
divider