OMOLAO/Desktop/STAT244-Assignment1.pdf drag to the Favorites Bar folder. Or impo

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OMOLAO/Desktop/STAT244-Assignment1.pdf drag to the Favorites Bar folder. Or import from another browser. Import favorites (d) Compare the range and the standard deviation, and comment on their relationship Question 4 (10 points): (Problem 2.24 from Introduction to Probability and Statistics, by Mendenhall, Ahmed, Beaver and Beaver, 1th edition) A distribution of measurements is relatively mound-shaped with mean 50 and standard deviation 10. (a) What proportion of the measurements will fall between 40 and 607 (b) What proportion of the measurements will fall between 30 and 70? (e) What proportion of the measurements will fall between 30 and 60? (d) If a meusurement is chosen at random from this distribution, what is the probability that it will be greater than 60? Question 5 (10 points): (Problem 2.85 from Introduction to Probability and Statistics, by Mendenhall, Ahmed, Beaver and Beaver, 1th edition) The following data are the response times in seconds for n 25 Grade I students to arrange three objects by size: 5.2 3.8 5.7 3.9 3.7 1.2 4.1 4.3 4.7 1.3

Explanation / Answer

a)

P(measurement will fall between 40 and 60)

b)

P(measurement will fall between 30 and 70)

c)

P(measurement will fall between 30 and 60)

for normal distribution z score =(X-)/x here mean=       = 50 std deviation   == 10.000

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