1.    The IQ scores of students listed below are from a SAMPLE...

Question

# 1.    The IQ scores of students listed below are from a SAMPLE...

1.    The IQ scores of students listed below are from a SAMPLE of MATH 300 class.

IQ Scores

92

110

105

96

120

100

90

98

110

95

102

99

93

119

106

103

91

101

97

105

a.    What is the mean IQ score? Round to the nearest whole number. (2.5 pts)

b.    Compute the IQ scores within plus/minus one standard deviation? Two answers. Round to the nearest whole numbers. (2.5 pts).

c.    Compute the IQ scores within plus/minus two standard deviation? Two answers. (2.5 pts).

2.    Let X have a normal distribution with µ= 10 and standard deviation σ= 2. Transform X to the standard normal form Z and match the following probability statements:

a) P(X>14)                     1) P(Z<-1)

b) P(X<8)                      2) P(-2 < Z < 2)

c) P(6 < X < 14)                 3) P(Z > 2)

a) is matched to ___________ (2.5 pts)

b) is matched to ___________ (2.5 pts)

c) is matched to ____________ (2.5 pts)

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