Answer: 196
Step-by-step explanation:
As per given , we have
Population standard deviation: 
Significance level : 
Using the z-value table , the critical z value for 98% confidence : 
Margin of error : E= 01 lb
Sample size : 

Simplify , we get

Hence, the minimum sample size required for books = 196
Answer:
2 times larger
Step-by-step explanation:
Ralph's pen is 91 feet long
ruths is 45.5
Easily makes 91
Answer:
230%
Step-by-step explanation:
2x3/10=23/10=2.3x100%=230%
Answer:
ttttttyyyyvugihihih9h9hoh9hih8hihivu8gu9gu9gu9g9ufu9gu9fu9gu9gu9fu9fu9fu9f