SOLUTION: In 2000 act mean was 20.7 normal distribution was 5 what is the probability that a random selected student has a act of at least 25

SOLUTION: In 2000 act mean was 20.7 normal distribution was 5 what is the probability that a random selected student has a act of at least 25

Algebra.Com

Question 1125808: In 2000 act mean was 20.7 normal distribution was 5 what is the probability that a random selected student has a act of at least 25
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
if mean was 20.7 and sd 5
z=(x-mean)/sd or 4.5/5 or 0.86
probability z > 0.86 is 0.1949
RELATED QUESTIONS
2. In 2000, as reported by ACT Research Service, the mean ACT Math score was μ=20.7. (answered by stanbon)

11. In 2000, as reported by the ACT Research Service, the mean ACT Math score was 20.7.... (answered by Boreal)

8. In a recent year, the ACT scores for high school students with a 3.50 to 4.00 GPA were (answered by Boreal)

8.In a recent year, the ACT scores for high school students with a 3.50 to 4.00 GPA were... (answered by Boreal)

A study was conducted on students from a particular high school over the last 8 years.... (answered by Theo)

Trevor wants to buy a local restaurant. 60% of the business days it's open, the... (answered by stanbon)

A study was conducted on students from a particular high school over the last 8 years.... (answered by ewatrrr)

In a recent year, the ACT scores for high school students with an A or B grade point... (answered by Theo)

A distribution of values is normal with a mean of 99.5 and a standard deviation of 16. (answered by ikleyn)