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An instructor is interested in assessing students' typing speed in the class. He knows that the...

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Statistics

An instructor is interested in assessing students' typing speedin the class. He knows that the average at the university is 49word per minute (wpm) with a SD of 18 wpm. He collectsdata from 31 of his students.

a) What is the probability of the average typingspeed being less than 49 wpm?
probability =  

b) What is the proability of the average typingspeed being between 51 and 53 wpm?
probability =  

Note: Do NOT input probability responses aspercentages; e.g., do NOT input 0.9194 as 91.94.

Answer & Explanation Solved by verified expert
4.2 Ratings (581 Votes)
Let x be the students typing speed in the classWe are given mean 49 and    See Answer
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