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A school district is considering moving the start of the school day at Groveland High from 8:00 a.m. to 9:00 a.m. to allow students to get more sleep at night. They want to estimate how many more hours of sleep teens get if their school starts at 9:00 a.m. compared to teens whose schools start at 8:00 a.m. The district takes random samples of 50 of students from Groveland High and 39 students from Phillips High School, which starts at 9:00 a.m., and surveys them about their sleep habits. The sample mean number of hours of sleep per student at Groveland is 7.1 hours, and the standard deviation is 1.7 hours. At Phillips, the sample mean is 8.3 hours of sleep, with a standard deviation of 1.9 hours. Is it appropriate to use a two-sample t-interval for the difference in means to estimate the difference in hours of sleep for students at the two high schools? Yes, all the conditions for inference are met. No, the two samples are not independent samples. No, the sample sizes for the two schools are different. No, at least one of the two samples is not a random sample. No, we do not know if the distributions of sleep times are roughly symmetric.

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Conclusion and Investment Recommendation. Make sure you address the characteristics of your client when making the recommendation and clearly indicate the potential for capital appreciation of the company’ stock.

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A pregnant woman reports that she is still playing tennis at 32 weeks of gestation. The nurse would be most concerned if this woman consumes which food during and after tennis matches? 64 ounces of fluid Salty foods to replace lost sodium Extra protein sources, such as peanut butter Easily digested sources of carbohydrate

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Activity 4a Constructs a DC BJT circuit base on the following requirement; A 15VV_(CC) is connected with (R_(C))=(1.5kOmega ) and then directly goes to collector terminal. A V_(BB) voltage is connected with (R_(B))=(610kOmega ) then directly goes to the base terminal. The emmiter terminal is connected with (R_(E))=(0.5kOmega ) before directly connected to the ground. The I_(B) recommened to operate this BJT circuit is at 32mu A with eta _(DC) equal to 120 Determine; i. The intercept points of the dc load line on the vertical and horizontal axes of the current-voltage curve. ii. The base voltage supply, V_(BB). iii. The collector current, I_(C) and the collector to emitter voltage, V_(CE) at the quiescent-point (Q- point). iv. If the base resistor, R_(B) is replaced by 80kOmega resistor, calculate the new I_(c) and determine the operation region of the transistor. Activity 4b A DC motor is used for conveyer belt running in forward directions. It requires 5V and 3.3mA current to be operated. You are required to design a current control circuit, such as using BJTs application that enable for these motors running accordingly. Sketch your circuit with a proper label base on your design parameters. You need to use data and design parameter based on actual transistor datasheet from real manufacturer. Attached the datasheet with your answer. Activity 4a l. Constructs a DC BJT circuit base on the following requirement A 15V Vcc is connected with (Rc = 1.5k and then directly goes to collector terminal. A VBB voltage is connected with (R = 610kQ) then directly goes to the base terminal. The emmiter terminal is connected with (RE =0.5k before directly connected to the ground. The I recommened to operate this BJT circuit is at 32A with pc equal to 120 2. Determine; i. The intercept points of the de load line on the vertical and horizontal axes of the current-voltage curve. ii. The base voltage supply,VBB. iii. The collector current, Ic and the collector to emitter voltage, Vce at the quiescent-point (Q- point). iv. If the base resistor, R is replaced by 80k resistor, calculate the new Ic and determine the operation region of the transistor. Activity 4b l. A DC motor is used for conveyer belt running in forward directions.It requires 5 V and 3.3 mA current to be operated. You are required to design a current control circuit, such as using BJTs application that enable for these motors running accordingly 2. Sketch your circuit with a proper label base on your design parameters. 3. You need to use data and design parameter based on actual transistor datasheet from real manufacturer. Attached the datasheet with your answer.

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A regression was estimated using these variables: Y = annual value of reported bank robbery losses in all U.S. banks ($ millions), X = annual value of currency held by all U.S. banks ($ millions), $n = 100$ years (1912 through 2011). We would not anticipate Multiple Choice autocorrelated residuals due to time-series data. heteroscedastic residuals due to the wide variation in data magnitudes. nonnormal residuals due to skewed data as bank size increases over time. a negative slope because banks hold less currency when they are robbed.

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Question 32 of 75. Naomi received a Form 1099-DIV reporting $104 in dividends for 2017. She had previously elected to have these dividends reinvested. Which of the following statements regarding the reinvested dividends is true? The dividends are not taxable until the stock is sold. The dividends are not taxable in 2017, but they increase her basis in the stock. The dividends are taxable on her 2017 return and increase her basis in the stock. None of these statements are true.

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Question 9 How many process can run on each CPU at the same time? 1 2 4 Any number of processes None of the above Question 10 How many threads can a process have? 1 2 Any number of threads None of the above 1 pts 1 pts

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9. The following are the Fourier transforms of discrete-time signals. Determine the signal corresponding to each transform. (a) X(e^jÏ‰) = 1 + 3e^(-jÏ‰) + 2e^(-2jÏ‰) - 4e^(-j3Ï‰) + e^(-j10Ï‰) (b) X(e^jÏ‰) = e^(jÏ‰) - 1 (c) X(e^jÏ‰) = e^(-jÏ‰) (d) X(e^jÏ‰) = -1/(jÏ‰ - k)

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5. Consider the following uneven cash flow stream. What is the future value, if the opportunity cost rate is 6%? Show your work. Year 0 1 2 3 4 5 Cash flow $0 250 400 500 600 600 6. A wealthy philanthropist has established the following endowment for a hospital. The details are as follows: a cash deposit of $ 7 M two years from now; an annual cash deposit of $4M per year for the next five years. The first $4M will start today; at the end of 5 years, the hospital will also receive a lump sum payment of $18M. Assuming the cost of money is 3%, what is the value of this endowment in today

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A postsynaptic potential occurs when a. neurotransmitters bind or attach to receptor sites on the presynaptic neuron. b. neurotransmitters are released into the synaptic cleft. c. neurotransmitters bind or attach to receptor sites on the postsynaptic neuron. d. neurotransmitters are reabsorbed into the terminal buttons.

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alejandro h.