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alicia lee

alicia l.

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Following output displays the comparison of males and females with regard to their engagement in a TV commercial. Let's compare the mean -engagement scores between males and females given in the output below. Note: gender code is males =1, females =2 At a significance level of .05, we can [ Select ] ["not reject", "reject"] the hypothesis that there is no difference in mean \engagement score between males and females because the associated p-value is [ Select ] [".077", ".026", ".078", "<.001"] . A 99% confidence interval for the true mean engagement score for males is [ Select ] ["(5.35,5.80,)", "(4.50,6.25)", "(5.42,5.72)", "(4.58,6.56)"] A 95% CI for the true mean engagement score difference between males and females indicates that the two means [ Select ] ["do not differ because the hypothesized value under the null hypothesis of no mean difference is within the confidence interval", "differ because the mean difference is 20.31"]

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Which of the following would you expect to cause the reaction time (i.e. the amount of time from start to finish) to decrease? Select all that apply. Add H2SO4 Immerse the reaction in an ice bath Immerse the reaction in a hot water bath Adding more starch solution

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4. Why was the discovery that H$_2$O$_2$ can form spontaneously so unexpected? Justify your answer with what you know about the free energy differences and degree of entropy in spontaneous vs. non-spontaneous chemical reactions.

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What is S° for B in the reaction 4A -> 2B if ΔS°(rxn) = -146.5 J/mol • K? [S°(A) = 205.0 J/mol • K]

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The equation of the line tangent to g(x) = ∫e^(-t^2) dt at x = 1 is y = 0.

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5. Show that the relation $e^y - x = c$ defines an implicit solution of the differential equation $y' = \frac{1 - ye^{xy}}{xe^{xy}}$

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Coastal Soda Sales has been granted exclusive market rights to the upcoming Beaufort Seafood Festival. This means that during the festival Coastal will have a monopoly, and it is anxious to take advantage of this position in its pricing strategy. The daily demand function is $p = 2 - 0.0004x$ and the daily total cost function is $C(x) = 600 + 0.2x + 0.0001x^2$ where $x$ is the number of units. (a) Determine Coastal's total revenue, $R(x)$, and profit functions, $P(x)$, in dollars. $R(x) = $ $P(x) = $ (b) What profit-maximizing price per soda should Coastal charge? $\ per soda How many sodas per day would it expect to sell at this price? sodas per day What would be the daily profits? $\ per day (c) If the festival organizers wanted to set an economically efficient price of $1.25 per soda, how would this change the results from part (b)? (Round your answer for daily profits to the nearest cent.) sodas per day it would expect to sell daily profits $\ per day

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Livestrong Bicycle Company manufactures a top-of-the-line road bike. The company began operations on December 1, 2013. Its accountant quit in the third week of operations, and the company is searching for a replacement. The company has decided to test the knowledge and ability of all candidates interviewing for the position. Each candidate will be provided with the information below and then asked to prepare a series of reports, schedules, budgets, and recommendations based on that information. The information provided to each candidate is as follows: Cost Items and Account Balances: - Administrative salaries-office: $16,500 - Advertising for helmets: $12,500 - Cash, December 1: $1,200 - Depreciation on factory building: $550 - Depreciation on office equipment: $1,250 - Insurance on factory building: $600 - Miscellaneous expenses-factory: $900 - Office supplies expense: $1,100 - Professional fees: $1,350 Raw materials used: $65,000 Rent on production equipment: $7,000 Research and development: $10,000 Sales commissions: $50,000 Utility cost-factory: $1,600 Wages-factory (direct): $42,000 Work in process, December 31: $65,000 Materials inventory, December 31: $1,600 Materials purchases: $42,000

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Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A steam power plant operates on an ideal reheat-regenerative Rankine cycle with one reheater and two open feedwater heaters. Steam enters the high-pressure turbine at 1500 psia and 1100°F and leaves the low-pressure turbine at 1 psia. Steam is extracted from the turbine at 250 and 40 psia, and it is reheated to 1000°F at a pressure of 140 psia. Water leaves both feedwater heaters as a saturated liquid. Heat is transferred to the steam in the boiler at a rate of 6.0 × 10<sup>5</sup> Btu/s. Boiler Reheater High-P turbine Low-P turbine Open FWH II Open FWH I Condenser Pump III Pump II Pump I Determine the mass flow rate of steam through the boiler. Use steam tables. (You must provide an answer before moving on to the next part.) The mass flow rate of steam through the boiler is .576 lbm/s.

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Explain how an enhancement mode MOSFET functions?

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