Answer:
6/11
Step-by-step explanation:
probability
6+5=11
so 6/11
Answer:
B
Step-by-step explanation:
1.2 x 3.7 nearest tenth
1 x 4 nearest whole number
B
so,it is the answer that you are looking for.please mark me as brainliest.
Answer: About 191 students scored between a 60 and an 80.
Step-by-step explanation:
Given : A set of 200 test scores are normally distributed with a mean of 70 and a standard deviation of 5.
i.e.
and 
let x be the random variable that denotes the test scores.
Then, the probability that the students scored between a 60 and an 80 :

The number of students scored between a 60 and an 80 = 0.9544 x 200
= 190.88 ≈ 191
Hence , about 191 students scored between a 60 and an 80.