Question 3 The final exam scores in a statistics class are normally distributed with a mean of 63 and a standard deviation of 5. Find the probability that a randomly selected student scored less than 75. Add your answer Integer, decimal, or E notation allowed

Q.104 HWV \( 60 \% \) of the students in a school are boys and the rest are girls. If \( 20 \% \) boys fail in the examination and \( 65 \% \) girls pass, then find the percentage of total number of students who passed.

If the variance of \( 2,5,7,10 \) and 14 is 17.04 then the variance of \( 5,8,10,13 \) and 17 is: \( \begin{array}{ll}\text { (a) } 17.04 & \text { (b) } 20.04 \\ \text { (c) } 51.12 & \text { (d) None of these }\end{array} \)

320 students like rap music. 395 students like rock music. 295 students like heavy metal music. 280 students like both rap music and rock music. 190 students like both rap music and heavy metal music. 245 students like both rock music and heavy metal music 160 students like all three. How many students: a. like exactly two of the three types of music? b. like only rock music?

What is a scatter plot?

If the variance of \( 2,5,7,10 \) and 14 is 17.04 then the variance of \( 6,15,21,30 \) and 42 is: \( \begin{array}{ll}\text { (a) } 17.04 & \text { (b) } 51.12 \\ \text { (c) } 153.36 & \text { (d) None of these }\end{array} \)