The ages (in months) at which 50 children were first enrolled in a preschool are listed below.38 40 30 35 39 40 48 36 31 3647 35 34 43 41 36 41 43 48 4032 34 41 30 46 35 40 30 46 3755 39 33 32 32 45 42 41 36 5042 50 37 39 33 45 38 46 36 31a. Construct a stem and leaf display for the data.b. Construct a relative frequency histogram for these data. Start the lower boundary of the first class at 30 and use a class width of 5 months.c. Compare the graphs in parts a and b. Are there any significant differences that would cause you to choose one as the better method for displaying the data?d. What proportion of the children were 35 months (2 years, 11 months) or older, but less than 45 months (3 years, 9 months) of age when firstenrolled in preschool?e. If one child were selected at random from this group of children, what is the probability that the child was less than 50 months old (4 years,2 months) when first enrolled in preschool?
The ages (in months) at which 50 children were first enrolled in a preschool are listed below.
38 40 30 35 39 40 48 36 31 36
47 35 34 43 41 36 41 43 48 40
32 34 41 30 46 35 40 30 46 37
55 39 33 32 32 45 42 41 36 50
42 50 37 39 33 45 38 46 36 31
a. Construct a stem and leaf display for the data.
b. Construct a relative frequency histogram for these data. Start the lower boundary of the first class at 30 and use a class width of 5 months.
c. Compare the graphs in parts a and b. Are there any significant differences that would cause you to choose one as the better method for displaying the data?
d. What proportion of the children were 35 months (2 years, 11 months) or older, but less than 45 months (3 years, 9 months) of age when first
enrolled in preschool?
e. If one child were selected at random from this group of children, what is the probability that the child was less than 50 months old (4 years,
2 months) when first enrolled in preschool?
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