1. A) The percentage of students with at least $30 in their possession is 15 Fre
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Question
1. A) The percentage of students with at least $30 in their possession is 15 Frequency 10 30 50 70 90 Amount of Money A about 10% b) about 20% c)about 30% d)over 50%. B) DATA SET: Age diagnosed with skin cancer: 5 2 2 3 3 4 5 7 89 9 6 0 0 0 2 3 4 4 4 5 6 77 8 8 89 7 3 4 5 566 7 77 88 99 9 I 101 8 USING the 1.5 x IQR calculation, determine the typical age range for this data set that would NOT be considered ou thiers lower limit Upper Limit: Does this data set have outliers? if so, which? Is the five-number summary or the mean and standard deviation a better brief summary for this distribution? Explain your choice.Explanation / Answer
PART C.
Mean ( u ) =7.11
Standard Deviation ( sd )=0.74
Normal Distribution = Z= X- u / sd ~ N(0,1)
a.
P(X < 9.33) = (9.33-7.11)/0.74
= 2.22/0.74= 3
= P ( Z <3) From Standard Normal Table
= 0.9987
b.
To find P(a < = Z < = b) = F(b) - F(a)
P(X < 5.63) = (5.63-7.11)/0.74
= -1.48/0.74 = -2
= P ( Z <-2) From Standard Normal Table
= 0.02275
P(X < 7.85) = (7.85-7.11)/0.74
= 0.74/0.74 = 1
= P ( Z <1) From Standard Normal Table
= 0.84134
P(5.63 < X < 7.85) = 0.84134-0.02275 = 0.8186
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