-3x>22+5
-3x>27 |(-1)
3x<-27
x<-9
x∈(-∞,-9)
Answer:
k=99
Step-by-step explanation:
k/9 + 7 = 18
Subtract 7 from each side
k/9 +7-7 = 18-7
k/9 = 11
Multiply each side by 9
k/9 *9 = 11 *9
k = 99
Answer: 141
Step-by-step explanation:
Let p be the population proportion of adults over 50 never graduated from high school.
As per given , we have
Prior estimate of proportion for adults with 5 to 30 age graduated from high school group : p= 0.25
Significance level :
Critical z-value :
Margin of error : E= 0.06
Sample size will be :-
Simplify ,
Hence, the required sample size younger age group be surveyed = 141