1) What is the percentage of typists who type 60 wpm or fastergiven that typing speed is normally distributed with a mean of 45wpm and a standard deviation of 12 wpm? Remember, probabiitiesshould be written out to 4 decimal places.

2)IQ scores have an average of 100 with a standard deviation of15. What is the percentage of people who have an above average IQ,i.e., above 110? Remember, probabilities should be written out to 4decimal places.

3)What is the percentage of new babies that weigh over 10 lbs ifthe weight of a newborn is distributed like a normal distributionwith a mean of 8.5 lbs and a standard deviation of 2 lbs? Remember,probabilities should be written out to 4 decimal places.

4) Find the 17th percentile of IQ scores if IQ is distributed asa normal distribution with mean 100 and standard deviation 15.Please use 2 decimal places in your answer.

Answer rating: 100% (QA)

1 To find the percentage of typists who type 60 wpm or faster we need to calculate the zscore for 60 ... View the full answer