(d) Which class has the highest frequency? a. 90-100 b. 99-99 c. 95 d. 100-109 (
ID: 3231809 • Letter: #
Question
(d)Which class has the highest frequency?
a. 90-100
b. 99-99
c. 95
d. 100-109
(e)Which class has the lowest frequency?
a. 65
b. 60-70
c.150-159
d, 60-69
(f)What percent of students had an IQ of at least 130?
(Type an integer or a decimal.)
(g)Did any students have an IQ of 166?
a. Yes, because there is a frequency of a score of 165
b. No, because there are no bars, or frequencies, greater than an IQ of 160.
c, Yes, because there is a bar in the 150-159 class.
d. No, because there is a bar in the 150-159 class.
The following frequency histogram represents the IQ scores of a random sample of seventh-grade students IQs are measured to the nearest whole number The frequency of each class is labeled above each rectangle Use the histogram to answers parts (a) through (g) (a) How many students were sampled? students (b) Determine the class width is The class width is. (c) Identify the classes and their frequencies Choose the correct answer below A. 60-70. 1; 70-80, 3; 80-90, 12; 90-100, 64; 100-110, 46; 110-120, 43; 120-130, 29; 130-140, 8; 140-150, 3; 150-160, 2; B. 66, 1; 75, 3; 85; 12; 95; 54, 105, 45; 115, 43; 125, 29; 135, 8; 145, 3; 155, 2 C. 60-69, 1; 70-79, 3; 80-89, 12; 90-99; 54; 100-109. 45; 110-119. 43; 120-129. 29. 130-139. 8; 140-149. 3: 150-159. 2 Click to select your answer(s).Explanation / Answer
A) total number of students = 1+3+12+54+45+43+29+8+3+2 = 200
B) class width = 70 - 60 = 10
C) Option-C
D) option-B) 90-99
E) Option-D) 60-69
F) percentage of students with atleast 130 IQ = (8+3+2)/200 = 13/200 = 6.5%
G) Option-B
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