Numerade

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OH PB3 g. h. i. = (1) Br2 (2) KOH. ethanol j. H2O H2SO4 k. L. OH HCI 1. Li, NH3 2, H3O+ CI Br Br

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what is the advantage of surrounding the genome by a membrane?

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(a) Estimate the fugacity of isobutylene as a gas at 280 °C and 100 bars by using the following: (i) 2<sup>nd</sup> virial coefficient (ii) Lee/Kesler correlation (iii) Which method is more accurate and why? (b) If the pressure is reduced to 20 bar, what would be the effect on the fugacity coefficient in part (a), it will be increased or decreased and why?

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Due April 25 Structuralism is a school of thought that studies: people as inherently good and motivated to learn and improve. the physical brain and body structures that underlie behavior and mental processes. sensations and personal experience analyzed as basic elements. thinking, learning, and perception in whole units rather than in parts.

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a) An unrepairable product line has a final test stage comprising test and analysis stations with timings as described below. Test time 0.87 minutes, Analysis time 29.00 minutes. i) The cycle time is measured to be 1.20 minutes. Calculate the submitted dpu. (2) Sketch an annotated flow chart for the final test stage. ii) Give two reasons for performing analysis in the case of an unrepairable product line. (2) iii) Describe circumstances under which you would propose to stop carrying out analysis on the unrepairable product line. (2)

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Question 16 16. H-N-H H The shape of ammonia, NH$_3$ is a) linear b) bent c) trigonal pyrmidal d) tetrahedral

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Question Find the midpoint of the line segment with endpoints (8,7) and (12,-5) Provide your answer below: ng Online

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Simplify the following expression.\\ $\frac{d}{dx} \int_{x}^{2} \sqrt{t^{2} + 5} dt$ \\ $\frac{d}{dx} \int_{x}^{2} \sqrt{t^{2} + 5} dt = $

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Problem 1 (30 pts) A study was conducted on the effects of ploidy on the prognosis of patients with cancers of the mouth. Samples of the cancerous tissues were taken at the time of surgery. Follow-up survival data was obtained on each patient. The tissue samples were examined using a flow cytometer to determine if the tumor had an aneuploid (abnormal) or diploid (normal) DNA profile. Times are in weeks. The data can be obtained from Section 1.11 of the textbook or the R package below library(KMsurv) data(tongue) We would like to test the hypothesis that the survival rates of patients with cancer of the tongue are the same for patients with aneuploid and diploid tumors. (a) What's the number of distinct failure times considering patients with both types of tumors? (b) Without using existing software packages for survival analysis, apply the logrank test to evaluate the hypothesis. What is your $p$ value and conclusion? (c) Show the Kaplan-Meier curves for two groups of patients in the same figure. Use different colors to represent the two groups. (d) If primary interest is in detecting differences in survival rates between the two types of cancers which occur soon after the diagnosis of the cancer, what weight function would you choose for the two-sample test? Run the test and provide your $p$ value and conclusion.

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3) (20 p) 10sinwt V input signal is applied to the circuit given below. a) Sketch Vo-Vi transfer characteristics for the given circuit. b) Sketch Vo-Vi transfer characteristics if the polarity of 1V DC supply is inverted.

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rachael s.