Answer:
C. 0.6766
Step-by-step explanation:
The area of the shaded region between the two z-scores
;
Z=-1.3 Z=0.75
In probability notation we have;
Pr(-1.3<Z<0.75)
From the standard normal tables, we have the following cumulative probabilities;
Pr(Z<0.75) = 0.7734
Pr(Z<-1.3) = 0.0968
Pr(-1.3<Z<0.75) = Pr(Z<0.75) - Pr(Z<-1.3)
Pr(-1.3<Z<0.75) = 0.7734 - 0.0968
Pr(-1.3<Z<0.75) = 0.6766
Step-by-step explanation:
frist ordering the data
4,4,4,5,6,7,7,7,10,11 then
3. the most common ages are 4& 7
4. the range = high - low so 11 - 4 =7
5.the median is Nth/2 + Nth/2 +1 then
10th/2 +10th/2 +1
(5th +6th)/2 = median
(6 +7)/2 =13/2 = 6.5 is the median of children