Answer:
Step-by-step explanation:
? = 1/2(230)
A 115°
Answer:
We have to find the 90% confidence interval for the mean
Given sample size
Sample mean
Population standard deviation
Here the confidence level is 90% then
And
The 90% confidence interval is
Here is the critical value at 0.05
From the tables
Now the 90% confidence interval is =
=
=(3840.44, 4133.56)
Hence the 90% confidence interval for the mean is (3840.44, 4133.56)
Step-by-step explanation:
1*-2=-2, -2*-2=4, -2*4=-8, -8*-32=256
Answer:
The value of 7 in 678,901 is 70000 which 10 times greater than that of 67,890 Which is 7,000.