Practice30Create account

A course grade is 25% unit test, 35% mid-term and 40% final exam. Riya scored 60 in the unit test and 70 in the mid-term. What must she score in the final to get an overall 75?

Competition practiceStatistics
  • A95
  • B88.75
  • C85
  • D90

Step-by-Step Solution

gives , so .
Answer: B) 88.75

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Statistics practice questions

More Statistics practice

The mean of 20 observations was 45. One observation was taken as 65 by mistake, and…For 20 observations the mean is 10 and the variance is 4 (divisor n). Later one…Three years ago the average age of a family of 5 members was 17 years. A baby has since…The range of a data set is 15. Every observation is multiplied by 3 and then 7 is added…Find the mean deviation about the mean of 4, 7, 8, 9, 10, 12, 13, 17.