Answer:
Step-by-step explanation:
a) H0: 
Ha: 
(Two tailed test at 5% significance level)
b) n=30
Mean difference = 
Std error of mean = 
b) Test statistic t = mean diff/std error = -1.552
df = 30-1 =29
p value=0.0657
c) Since p > 0.05 our signi. level, we accept null hypothesis.
There is no significant difference between the means.
d) Using critical value we find that test statistic is > critical value left
So accept H0
If you play music then you won't get distracted by the outside world or if you study in a quiet room
10x=44 x=44 so the square root of 44 is 44 im in 6th grade and i knew that wow
Answer:
They bought 5
Step-by-step explanation:
65x+40y=765
65(5)+40(11)=765