hard · SAT Math
A fitness center surveyed 300 members about age group and personal-training (PT) use, shown in the two-way table below. PT: Yes : PT: No : Total Under 30 : 45 : 105 : 150 30 and older : 30 : 120 : 150 Total : 75 : 225 : 300 What is the difference between the probability that a randomly selected under-30 member uses personal training and the probability that a randomly selected member, of any age, uses personal training?
- 0.35
- −0.10
- 0.05
- −0.05
Sign up free to see the explanation and track your rank →
More SAT Math practice
- What is the greatest integer value of x that satisfies the inequality (2)/(3)(9 - 6x) ≥ 4x
- In the equation (2)/(3)(6x-9)=(1)/(4)(8x+20)+3, what is the value of 2x+1?
- If the system has no solution, what is the value of a?
- What is the value of c?
- If 5x - 12 = 3x + 8, what is the value of 2x?
- A print shop's total charge, in dollars, for an order of n p… — According to this function
- How many real solutions does the equation |2x + 6| + 10 = 4 have?
- If 2x + y = 13 and 3x - y = 7, what is the value of x + y?