Answer:
Difference = 206 - 154.5 = $51.5
In short, Your Answer would be: $51.5
Answer:
The 95% confidence interval based on this sample is =
[6.41, 7.79]
Step-by-step explanation:
The formula for Confidence Interval =
Mean ± z × standard deviation/√n
Sample mean = 7.1 hours
Standard deviation = 5 hours
n = 200 students
z = 95% confidence interval z score
= 1.96
C.I = 7.1 ± 1.96 × 5/√200
C.I = 7.1 ± 0.693
Hence, Confidence Interval
= 7.1 - 0.693
= 6.407
Approximately = 6.41
= 7.1 + 0.693
= 7.793
Approximately = 7.79
Therefore, the 95% confidence interval based on this sample is
[6.41, 7.79]
Answer:
the answer is D. she loses 75
Step-by-step explanation:
Answer:
Step-by-step explanation:
x = 32/5
Decimal Form:
x = 6.4
Mixed Number Form:
x = 6 2\5
