Answer:
3 pi.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Since population std deviation is not known, we use t critical value for testing of hypothesis.
a) 90% conf level when n =28
df = 27, t critical = 1.706
b) 95% 28
df =27 and t critical = 2.052
c) 90% and 15
df =14 and t critical = 1.761
d) 95% and n =15
df =14: t critical = 2.145
The correct graph is the last one
x -3<-12
x<-12+3
x<-9
Turn the percentage into a decimal
30% = 0.3
Multiply.
80 * 0.3 = 24
Best of Luck!
Step-by-step explanation:
Disculpe pero de qué grado es usted para ayudarle un poquito más mejor
