Answer:
<em>The percentage of the students who completed the poll preferred rock and roll music.</em>
<em>P(RR) = 0.1423 = 14.23 %</em>
Step-by-step explanation:
<u><em>Explanation</em></u>:-
<em>Given total number of students n(S) = 1960</em>
Given the Students at a high school were polled to determine the type of music they preferred.
Rap 916
Alternative 46
<em>Rock and Roll 279</em>
Country 183
Jazz 32
Other 89
<em>Let ' RR' be the event of Rock and Roll preferred music</em>
<em>given </em>Rock and Roll = 279
<em>n( RR) = 279</em>
<em>The percentage of the students who completed the poll preferred rock and roll music.</em>
<em></em>
<em></em>
<em>P(RR) = 0.1423 = 14.23 %</em>
<em></em>
<em></em>
There are four values, including the unknown value x. The sum of the four values is the given value of the mean, 11.5, multiplied by four. Let S be the sum of the four values. Then we can write:


x = 46 + 5 = 51
The answer is: The value of x is 51.
Answer:
15.5kg
Step-by-step explanation:
12.4kg × 5 = 62kg,
= 62kg - (14.6kg + 11.4kg + 10.3kg + 10.2kg)
= 62kg - 46.5kg
= 15.5kg
Answer:A number decreased by 40
Step-by-step explanation: I really don't feel like explaining this lol...