How many different arrangements of the letters in the word power
1 answer:
5 letters ==> 
power powre poewr poerw porwe porew pwoer pwore pweor pwero pwroe pwreo peowr peorw pewor pewro perow perwo prowe proew prwoe prweo preow prewo opwer opwre opewr operw oprwe oprew owper owpre owepr owerp owrpe owrep oepwr oeprw oewpr oewrp oerpw oerwp orpwe orpew orwpe orwep orepw orewp wpoer wpore wpeor wpero wproe wpreo woper wopre woepr woerp worpe worep wepor wepro weopr weorp werpo werop wrpoe wrpeo wrope wroep wrepo wreop epowr eporw epwor epwro eprow eprwo eopwr eoprw eowpr eowrp eorpw eorwp ewpor ewpro ewopr eworp ewrpo ewrop erpow erpwo eropw erowp erwpo erwop rpowe rpoew rpwoe rpweo rpeow rpewo ropwe ropew rowpe rowep roepw roewp rwpoe rwpeo rwope rwoep rwepo rweop repow repwo reopw reowp rewpo rewop
power powre poewr poerw porwe porew pwoer pwore pweor pwero pwroe pwreo peowr peorw pewor pewro perow perwo prowe proew prwoe prweo preow prewo opwer opwre opewr operw oprwe oprew owper owpre owepr owerp owrpe owrep oepwr oeprw oewpr oewrp oerpw oerwp orpwe orpew orwpe orwep orepw orewp wpoer wpore wpeor wpero wproe wpreo woper wopre woepr woerp worpe worep wepor wepro weopr weorp werpo werop wrpoe wrpeo wrope wroep wrepo wreop epowr eporw epwor epwro eprow eprwo eopwr eoprw eowpr eowrp eorpw eorwp ewpor ewpro ewopr eworp ewrpo ewrop erpow erpwo eropw erowp erwpo erwop rpowe rpoew rpwoe rpweo rpeow rpewo ropwe ropew rowpe rowep roepw roewp rwpoe rwpeo rwope rwoep rwepo rweop repow repwo reopw reowp rewpo rewop
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Answer:
The numerical limits for a B grade are 81 and 89, that is, a score between 81 and 89 gets a B grade.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation
, the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Scores on the test are normally distributed with a mean of 79.7 and a standard deviation of 8.4.
This means that
B: Scores below the top 13% and above the bottom 56%
So between the 56th percentile and the 100 - 13 = 87th percentile.
56th percentile:
X when Z has a p-value of 0.56, so X when Z = 0.15. Then
87th percentile:
X when Z has a p-value of 0.87, so X when Z = 1.13.
The numerical limits for a B grade are 81 and 89, that is, a score between 81 and 89 gets a B grade.