Consider the following list of activities with time (in months)ActivityABCDEFGHImmediatePredecessor----------AA,BA,BCD,FE,G ActivityOptimisticMost ProbablePessimisticA3.54.04.5B2.03.07.0C6.57.510.0D5.05.56.0E5.06.58.0F8.09.511G6.07.09.5H4.05.06.0 c) What is the variance of the project completion time?d) What is the probability of completing in 32 months?

C) Variance of project completion time is 6.0 months2D) The probability of completing is…

Answered: Consider the following list of…

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter1: Functions

Section1.2: The Least Square Line

Problem 1E

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Suppose the incidence rate of influenza (flu) during the win-ter of 2008−2009 (i.e., from December 21, 2008, to March 20, 2009) was 50 events per 1000 person-months among students in high schools in a particular city. 14.32 A group of high-risk high school students was iden-tified in the winter of 2008−2009 who had 3+ previous episodes of influenza before December 21, 2008. There were 20 students in this group, each followed for 90 days, of whom 8 developed influenza. Test the hypothesis that the high-risk students had a higher incidence rate of influenza than the average high school student during the winter of 2008−2009. Report a one-tailed p-value. 14.33 Provide a two-sided 95% CI for incidence rate of flu among high-risk students during winter 2008−2009. Among 1200 students in one high school in the city, 200 developed a new case of influenza over the 90 days from December 21, 2009, to March 20, 2010. 14.34 What is the estimated incidence rate of flu in the 2009−2010 winter season…
Dr. Payne is studying the number of davs patients stav in Armadillo Community Hospital after a specific surgical procedure. She examined the records of all patients who had the procedure within the past year and found that u = 4 and o = 1.50. She's worried about the long-term outlook for patients who have lengthy hospital stays, and she has recommended to the board of directors that the 15% of patients who stay the longest should receive special follow-up care A. This means that all patients who stay blank (don't round off the number of days) days or more should receive special care. B. If a patient's hospital stay is at the 25th percentile, should he receive special care under Dr. Payne's recommendation?

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Activity	Optimistic	Most Probable	Pessimistic
A	3.5	4.0	4.5
B	2.0	3.0	7.0
C	6.5	7.5	10.0
D	5.0	5.5	6.0
E	5.0	6.5	8.0
F	8.0	9.5	11
G	6.0	7.0	9.5
H	4.0	5.0	6.0