Answer:
The 90% confidence interval would be given by (0.466;0.694)
Step-by-step explanation:
The estimated proportion of interest would be:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by 
and 
. And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
If we replace the values obtained we got:
The 90% confidence interval would be given by (0.466;0.694)
Answer:
k = 4 ;
N = 52
Step-by-step explanation:
Given the ratio F(3, 48)
F takes in degree of freedom values; degree of freedom of groups ; degree of freedom of error
Hence,
df group or treatment = 3
df error = 48
df treatment = k - 1
k = Number of groups
3 = k - 1
3 + 1 = k - 1 + 1
4 = k
Number of treatment condition = 4
df error = N-k
N = total number of observations
48 = N - 4
48 + 4 = N - 4 + 4
52 = N
Answer:
A. $ 24 7/8
Step-by-step explanation:
GIVEN: A stock starts the day at $27 3/8 per share.
Share drops $2 1/2 during the day.
To Find : Closing value
Solution : first we need to find how many 1/8 are there in 1/2
So, 
when share drops by $2 then share will be :
$27 - $2 =$25
and 
⇒
⇒
So, 
⇒
So, its closing value is .
The value of the first 5 is 5 ten thousands and the second 5 i 5
thousands while the value of the first 2 is 2 hundreds and the second 2
is 2 tens.
