The average annual salary for all u.s. teachers is $47,750. assume that the distribution is normal and the standard deviation is
1 answer:
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Answer:
In Grade 9, 20% of students liked classical music.
Step-by-step explanation:
Your table was hard to decipher, so I have recreated it here.
(a) In Grade 9, 53 students liked pop music.
FALSE. 53 % of the students liked pop music. We don't know how many students there were.
(b) In Grade 8, 60% of students liked heavy metal.
FALSE. 40 % of students liked heavy metal.
(c) In Grade 8, 10 students liked classical music.
FALSE. We don't know how many students there were.
(d) In Grade 9, 20% of students liked classical music.
TRUE. 0.20 means 20/100 or 20 %.