Answer:
5/4 blocks per minute
Step-by-step explanation:
distance
speed = ----------------
time
Here,
25 blocks
speed = ------------------- = 5/4 blocks per minute or 75 blocks per hour
20 minutes
The answer is <span>012.96. Hope this helps!
</span>
Answer:
His 95% confidence interval is (0.065, 0.155).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
For this problem, we have that:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
His 95% confidence interval is (0.065, 0.155).
Answer:
Percentage of computers working equals:
90%
Step-by-step explanation:
Three of the thirty computers are out of service.
Number of computers working=30-3=27
Total computers=30
Percentage of working computers=
=
= 90%
Hence, Percentage of computers working is:
90%
Answer:
b is the answer
Step-by-step explanation:
f(x) = ax^2 + bx + c
