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Let $p=0.25$ be the proportion of smart phone owners who have a given app. For a particular smart phone owner, let $x=1$ if they have the app and $x=0$ otherwise. For a random sample of 70 owners, complete parts a through e below. a. State the population distribution (that is, the probability distribution of X for each observation). $P(X=1) = 0.25$ and $P(X=0) = 0.75$ (Type integers or decimals. Do not round.) b. State the data distribution if 42 of the 70 owners sampled have the app. (That is, give the sample proportions of observed 0s and 1s in the sample.) The proportion for $x=1$ is $0.6$ and the proportion for $x=0$ is $0.4$. (Type integers or decimals. Do not round.) c. Find the mean of the sampling distribution of the sample proportion who have the app among the 70 people. mean = (Type an integer or a decimal. Do not round.)

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Hal exchanges his apartment complex for Hillary's farm, and the exchange qualifies as a like-kind exchange. Hal's adjusted basis for the apartment complex is $590,000 and the complex is subject to a $200,000 liability. The FMV of Hillary's farm is $820,000 and the farm is subject to a $130,000 liability. Each asset is transferred subject to the liability. Requirement What is Hal's recognized gain and the basis of the new farm? Begin by calculating the realized gain. The realized gain = \$ 300,000 Calculate the recognized gain. The recognized gain = 0

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What is the first basic step of the New Behavior Generator? Choose one answer. a. Form a visual image of a desired behavior b. Visualize a field of flowers c. Form a visual image of an unwanted behavior d. Visualize a traumatic experience from your pas

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Which of the following represents a negative effect of protists in the marine environment? (choose all that apply) a. Photosynthetic diatoms serving as food source for filter feeders b. Cyanobacteria causing a harmful algal bloom in an estuary c. Zooxanthellae living in tissues of corals and providing glucose from photosynthesis d. Diatoms producing the neurotoxin domoic acid which accumulates in food chain e. Xcellidae protists causing disease in marine fish f. Dinoflagellate Karenia brevis causing red tide blooms in Gulf of Mexico

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Which of the following is recommended for the nurse monitoring the cumulative dose of a medication? A. Manually check the total amount of the agent administered B. Ask the patient to state the amount of medication administered in the last cycle C. Use the calculation in the electronic medical record to verify the dose D. Ask the physician for the amount of medication the patient has received

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Evaluate the indefinite integral $ \int \frac{7dr}{r \ln(6r)} = $ To enter absolute values, do not use the bars, but the function $abs(x)$.

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1. Consider a packet switching architecture. b. What is the difference between transmission delay and propagation delay? c. How is propagation delay affected if the length of the packet is increased? 2. Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to Host B. a. Express the propagation delay, dprop, in terms of m and s. b. Determine the transmission time of the packet, dtrans, in terms of L and R. c. Ignoring processing and queuing delays, obtain an expression for the end-to-end delay. d. Suppose Host A begins to transmit the packet at time t=0. At time t=dtrans, where is the last bit of the packet? e. Suppose dprop is greater than dtrans. At time t=dtrans, where is the first bit of the packet? f. Suppose dprop is less than dtrans. At time t=dtrans, where is the first bit of the packet? g. Suppose s=2*10^3, L=1,024 bits, and R=256 kbps. Find the distance m so that dprop equals dtrans. 3. Suppose two hosts, A and B are separated by 10,000 kms and are connected by a direct link of R = 1Mbps. Suppose the propagation speed over the link is 2.5 x 10^8 m/s. (a) Calculate the bandwidth-delay product, R.tprop. (b) Consider sending a file of 400,000 bits from A to B. Suppose the file is sent continuously as one big message. What is the maximum number of bits that will be in the link at any given time? (c) How long does it take to send the above file if it is sent continuously? (d) Suppose now that the file is broken up into 10 packets with each packet containing 40,000 bits. Assume the time taken for an acknowledgement packet is negligible. Finally, assume that the sender cannot send a packet until the preceding packet is acknowledged. How long does it take to send the file? 4. You are trying to transfer the contents of a 1.25 terabyte disk drive between here and New York, and have at your disposal two methods: (a) sending the data over a 100mbps link or (b) sending the drive by Federal Express (with a guarantee that it will arrive in 24 hours) Assume the network charges 10^-1 cents per bit transmitted, and Federal Express charges $30 for the package. Which option is faster? Which option is cheaper?

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It will have the following cash flows. Year Cash Flow 1 $985 2 $1,050 3 $1,450 4 $2,245 a.If the discount rate is 4 percent, what is the future value of these cash flows at the end of Year 4? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b.What is the future value at an interest rate of 11 c. What is the future value at an interest rate of 17 percent? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

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Problem 2 The time-average potential of a neutral hydrogen atom is given by ? = \frac{q}{4\pi\epsilon_0} \frac{e^{-\alpha r}}{r} (1 + \frac{\alpha r}{2}) q is charge (magnitude), $\alpha^{-1} = \frac{a_0}{2}$, $a_0$ is Bohr radius. Find the distribution of charge (both continuous and discrete) that will give this potential and interpret your result physically. Hint: problem is in spherical coordinates. Use Laplace Operator in spherical coordinates: ?? = \frac{1}{r^2} \frac{\partial}{\partial r} (r^2 \frac{\partial ?}{\partial r}) + \frac{1}{r^2 \sin \theta} \frac{\partial}{\partial \theta} (\sin \theta \frac{\partial ?}{\partial \theta}) + \frac{1}{r^2 \sin^2 \theta} \frac{\partial^2 ?}{\partial \phi^2} 3 points

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3. A rigid tank initially contains 2 lbm saturated liquid-vapor mixture of refrigerant-134a. The quality factor x is 0.4. Heat is transferred to the tank from a source until the pressure inside rises from 30 psia to 60 psia. Determine the amount of heat transfer to the tank. What is the exergy destroyed in the process? What is the entropy generated in the process? (20 points).

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sheila l.