Answer:
radius = 5 in
Step-by-step explanation:
Using the formula for calculating the area (A) of a circle
A = πr² ( r is the radius )
here A = 78.5, hence
3.14r² = 78.5 ( divide both sides by 3.14 )
r² = = 25 ( take the square root of both sides )
r = = 5
Answer:
A) 2.58
B) 1.96
C) 1.65
Step-by-step explanation:
A hypothesis used to test that
against the alternatives not equal to 10
if null hypothesis is true, then distribution of test statics follow
for two sided alternatives hypothesis , then P value is
(1)
a)significance level
from 1 eq we get
Therefore FROM Z TABLE
B) significance level
from 1st equation we get
Therefore FROM Z TABLE
C) significance level
from 1 eq we get
Therefore FROM Z TABLE