Answer: Tt is unlikely to have change in the sample mean score is less than 10 points .
Step-by-step explanation:
Given : Mean :
Standard deviation :
Sample size : n= 100
We assume that the change in students scores are normally distributed.
Let X be the random variable that represents the change in students scores .
Z score :
For x = 10
By using the standard normal distribution table , the probability that the change in the sample mean score is less than 10 points :-
Since the calculated probability is less than 0.5.
So , we say that it is unlikely to have change in the sample mean score is less than 10 points .
Answer:
25%
Step-by-step explanation:
65.0798 rounded to the nearest tenth is 65.1, if the number after the number you are rounding is 5 or over you will round up. If the number after it is under 5 then it will stay the same.
Answer:
Step-by-step explanation:
Can u give me thanks I need it so I can get 50 points plz
the numbers are being divided by 4 so 12/4 =3
next number is 3