Exercise 3Covid-19 vaccine experimental claims a protection rate of at least 95%for Pfizer. Describe both the Type l and Type Il errors in context. Whicherror is the more serious?Type I: Vaccinated people believe the vaccine protection rate for theCovid virus is less than 95% when it actually is at least 95%.Type II: Vaccinated people believe the Covid vaccine has at least a 95%protection rate when it has a protection rate that is less than 95%.Question:Which type of error has the greater consequence, Type I orТуре 1?Larson & Farber, Elementary Statistics: Picturing the World, 3e17

Given Type I Vaccinated people believe the vaccine protection rate for the Covid virus is < 95%…

Answered: Exercise 3 Covid-19 vaccine…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Survival Analysis: An observational study is conducted to compare the survival experience of individuals with brain cancer following treatment. Participants undergo treatment and are followed until the time of recurrence, until they are lost to follow-up or up to 40 weeks, whichever comes first. The following table details the experiences of participants undergoing radiotherapy alone or radiotherapy and surgery. The data below are week to recurrence or week of last contact. Using the Kaplan-Meier approach, what is the Survival Probability at the end of 34 weeks for surgery/radiotherapy? (Hi nt: set up a table for Surgery/radiotherapy including columns for time (week), Nt, Dt, Ct, and St+1) Radiotherapy Alone Weeks to Surgery/Radiotherapy Weeks to Week of Last Contact (no recurrence) Week of Last Contact (no Irecurrence recurrence recurrence) 10 3 2 2. 4 6 14 10 21 5 23 29 8 32 34
Survival Analysis: An observational study is conducted to compare the survival experience of individuals with brain cancer following treatment. Participants undergo treatment and are followed until the time of recurrence, until they are lost to follow-up or up to 40 weeks, whichever comes first. The following table details the experiences of participants undergoing radiotherapy alone or radiotherapy and surgery. The data below are week to recurrence or week of last contact. Using the Kaplan-Meier approach, what is the Survival Probability at the end of 8 weeks for radiotherapy alone? (Hint: set up a table for radiotherapy including columns for time (week), Nt, Dt, Ct, and St+1) Radiotherapy Alone Weeks to Surgery/Radiotherapy Weeks to Week of Last Contact (no recurrence) Week of Last Contact (no recurrence recurrence recurrence) 3 2 10 2. 4. 14 2 5 10 21 5 23 29 8 32 34
Animal shelters in a county need at least 15% of their animals to be adopted weekly to have room for the new animals that are brought into the various shelters. The county manager takes a random sample of shelters each week to estimate the overall proportion of animals that are adopted. If he concludes that the proportion has dropped below 15%, he will not accept any new animals into the shelters that week. He tests the hypotheses: H0: The adoption rate is 15%, and Ha: The adoption rate is less than 15%. What is a Type II error, and what is its consequence in this context? The manager believes the adoption rate is still 15%, when it actually has dropped below 15%. The manager will accept more animals into the shelters and will run out of room. The manager believes the adoption rate has dropped below 15%, when it actually has not. The manager will accept more animals into the shelters and will run out of room. The manager believes the adoption rate is still 15%, when it actually has…
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Independent studies show that 26 out of 40 r/s full-time students favor a shorter semester system, while 38 out of 50 r/s part-time students favor the same. Construct a 98% c.i. for the difference between the overall percentage of full-time students favoring a shorter semester system and that of part-time students.
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