mathil .corn/Student/ptiye, Iestaspanestid-162/2148emin Quiz: Unit Review: Sampl

Question

mathil .corn/Student/ptiye, Iestaspanestid-162/2148emin Quiz: Unit Review: Sampling Distribu This Question: 2 pts Scores on a particular standardized test ate approximalely Nomalty disinbuted with a mean of 21 and a standard deviation of 5, as shown in the figure to the right What is the 006 probability that a randomly selacted peison 0 scores 23 or more? Derely 101520 35 Mean 21 Std. Dev5 ProtXX s 23·065542 174 The probability that a randomly selected porson wil score 23 or more is Round to four deciial places as needed.) newer in the answer

Explanation / Answer

Solution:-
given that mean 21, standard deviation 5
  
=> P(x23) = P(z(23-21)/5)
= P(Z2/5)
= P(z0.4)
= 0.6554

The probability that a randomly selected person will score 23 or more is 0.6554

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