Question 1197759
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Hi  
Normal Distribution: µ = 140,  and σ = 22 wpm
The probability that the mean reading speed for a group of 32 fourth graders exceeds _________ is 10%.

Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
z = Invnorm(.90) = 9.5026
 x = 22*9.5026 + 140 = {{{357.61wpm}}}
Wish You the Best in your Studies.
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