(a) Calculate the standard deviation of sample mean.

(1)若懷恩公司上述之證券投資為「透過其他綜合損益按公允價值衡量股票投資」，請作其 X3 年 9 月 30 日出售該股票投資之所有相關分錄。

(2)若懷恩公司上述之證券投資為「透過其他綜合損益按公允價值衡量債券投資」，設懷 恩公司 X3 年度之淨利為$9,000,000 (不包括出售上述證券投資，不考慮所得稅，設 無折溢價取得)。請編製懷恩公司 X3 年度綜合損益表(自本期淨利開始，且不考慮所 得稅)。 

六、力行公司於X1年1月1日以市場利率3%發行三年期，面額$1,000,000之可轉換公司債，票面利率1%，每年底付息一次。該公司債若不附轉換權利，其市場利率約為5%。 報稅以有效利息法認列利息費用，但稅法不允許認列該轉換權價值。 X3年1月1日，公司以價格97收回全部可轉換公司債進行註銷，當日該公司債若不附轉換權之市場利率約為6%。設各年稅率均為20%。  試作: 力行公司X1年至X3年可轉換公司債及所得稅之相關分錄。

1. Calculate the mean and standard deviation for the following sample:               0, 2, 0, 0, -1, 1, -2, 1, 0, -1, 1, -1, 0, -3, -2, -1, 0, 1

(b) If P (sample mean ＞ 19.1) = .5, what is the population mean?

3. A random sample of 75 measurements was selected from a population with the variance of 12. The sample mean is 28. Calculate a 95% confidence interval for the population mean.

4. A random samples of 64 observations produced with the sample mean of 0.323 and the sample variance of 0.034. Test the hypothesis that if the population mean is less than 0.36 using the significance level of 0.10. 

1.執行護理評估时,尚需收集劉女士那兩項生理數據?哪三項心理社會相關之數據?

2.劉女士住院期間,可能會面臨哪兩個護理問題?,請各舉兩項有效的護理處置,並說明其理由。

二請總結此篇文章之(1)重要研究結果及(2)其建議。 The pandemic of COVID-19 is growing, and a shortage of masks and respirators has been reported globally. Policies of health organizations for healthcare workers are inconsistent. The findings of this systematic review of randomized controlled clinical trials showed that:In the community, masks appeared to be eftective with and without hand hygiene, and both together are more protective. Randomised controlled trials in health care workers showed that respirators, if worn continually during a shift,were effective but not if worn intermittently. Medical masks were not eflective,and cloth masks even less effective. When used by sick patients randomised controlled trials suggested protection of well contacts. The study suggests that community mask use by well people could be beneficial, particularly for COVID-19, where transmission may be pre-symptomatic. The studies of masks as source control also suggest a benefit, and may be important during the COVID-19 pandemic in universal community face mask use as well as in health care settings. Trials in healthcare workers support the use of respirators continuously during a shift. This may prevent health worker infections and deaths from COVID-19, as aerosolisation in the hospital setting has been documented.Source: MacIntyre, C. R., & Chughtai, A. A. (2020). A rapid systematic review of the efficacy of face masks and respirators agains st coronaviruses and other respiratory transmisible viruses for the community, healthcare workers and sick patients. International jowrnal of mursing studies, /08, 101629.