Answer:
24
Step-by-step explanation:
Answer:
7.56
Step-by-step explanation:
14x.50(the remainder after you subtract the percent from 100) = 7
8% of 7 is 0.56
7+0.56=7.56
Answer:
Excluded Value : 3 and -5
Step-by-step explanation:
hello :
Excluded Value : and
the excluded value when : x²+2x-15=0
(
x²+2x+1)-1-15=0
means : (x+1)²-16=0 (x+1)²-4² = 0
by identity : a²-b² =(a-b)(a+b)
(x+1-4)(x+1+4) =0 so : (x-3)(x+5) =0 means : x-3=0 or x+5=0
x=3 or x= -5
Excluded Value : 3 and -5
Answer:
6.00+0.20+0.05
Step-by-step explanation:
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 .