Qnt/351 week 1 introduction to statistical thinking worksheet

University of Phoenix Material                          




Directions: Complete the aftercited questions. The most material bisect of statistics is the conceit regularity, so shape unfailing that you interpret your rejoinders, but be circumspect delay statistics. The aftercited statistics/chance problems may trickery you and you may be surprised. The rejoinders are not frequently as you ability deem.  Please rejoinder them as well-mannered-mannered as you can by using base logic.



1.      There are 23 tribe at a bisecty. Interpret what the chance is that any two of them distribute the identical birthday. 





2.      A delibescold and flu con-aggravate is looking at how two contrariant medications product on cutting throats and ardor.  Results are as follows:


·        Sore throat - Medication A:  Success scold - 90% (101 out of 112 trials were auspicious)

·        Sore throat - Medication B:  Success scold - 83%  (252 out of 305 trials were auspicious)


·        Fever - Medication A:  Success scold - 71%  (205 out of 288 trials were auspicious)

·        Fever -  Medication B:  Success scold - 68%  (65 out of 95 trials were auspicious)

Analyze the basis and interpret which one would be the rectify medication for twain a cutting throat and a ardor.







3.      The United States populated a statistician to inquire impairmentd planes inconsiderable from bombing missions aggravate Germany in World War II.  He endow that the calculate of returned planes that had impairment to the fuselage was far greater than those that had impairment to the engines.  His advice was to repair the supply of the engines rather than the fuselages.  If impairment to the fuselage was far further base, interpret why he made this advice.