Numerade

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Q3 (a) A random sample of 40 customer wait times (in minutes) at a local bank branch was taken. The sample mean and standard deviation were 5.5 minutes and 0.7 minutes, respectively. (i) Calculate a 90% confidence interval for the average wait time for all customers, and interpret this confidence interval. [7 marks] (ii) If you want to obtain an estimate with a margin of error of no more than 0.2 minutes, what sample size should be chosen? (Assume a 90% confidence level). [5 marks]

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a space station has the form of a hoop of radius R= 14 m, with mass M = 6250 kg. Initially its center of mass is not moving, but it is spinning with angular speed w0=0.0013

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When a peptide hormone or neurotransmitter interacts with a target cell, A) it may bind to receptors in nucleus to initiate transcription. B) it binds to extracellular receptors. C) it may bind to enzymes in the cytosol to and alter their activity. D) both a) and b) occur. E) both b) and c) occur.

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The CPI of 2016 was 240.0 which means that the overall price level in the U.S. has increased by ( )% since the base period of ( ). The CPI at for 2015 was 237.0, then the inflation rate of 2016 was ( )%

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1. $\lim_{x \to 0} \frac{e^{3x} - 1}{\sin(9x)}$ 2. $\lim_{x \to 0} \frac{x^5 + 4}{x^9 + 2}$ 3. $\lim_{x \to 0} \frac{x^3}{\sin x - x}$ 4. $\lim_{x \to \infty} x \tan(5/x)$ 5. $\lim_{x \to 0} \left(\frac{1}{x^4} - \frac{3}{x^2}\right)$ 6. $\lim_{x \to 0^+} x \sqrt{x}$ 7. $\lim_{x \to 0^+} \frac{\ln x}{x}$ 8. $\lim_{x \to \infty} \frac{x^{100}}{e^x}$ 9. $\lim_{x \to \infty} \left(1 + \frac{2}{x}\right)^x$ 10. $\lim_{x \to 0^+} \sin x \ln x$

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the effect of a change in the price of apples on a consumer's demand for oranges

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Price ceilings Are set above equilibrium. Reduce social surplus because of deadweight loss. Are set to protect sellers. Create surpluses.

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A coin has been altered so that the probability that a head will occur is 2⁄3. If the coin is tossed 9 times, give the mean and standard deviation of the distribution of the number of heads. (Round your answers to two decimal places.)

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Liberalism explicitly maintains that the "right" is prior to the "good."

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PROBLEM How would you use the reaction of an amide with LiAlH$_4$ as the key step in going from 21-21 bromocyclohexane to (N,N-dimethylaminomethyl)cyclohexane? Write all the steps in the reaction sequence.

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theresa s.