Answer:
29.4≤μ≤32.6
Step-by-step explanation:
The datas given from the questions are as shown:
Number of people n = 24
Mean xbar= $31
Standard deviation σ = $6
Confidence Interval formula is expressed as:
CI = xbar ± Z(σ/√n)
Z value for 80% confidence interval is 1.282
Substituting the values into the Confidence Interval formula will give;
CI = 31 ± 1.282{6/√24}
CI = 31 ± 1.282(1.225)
CI = 31 ± 1.57045
CI = 31+1.57045 and 31-1.57045
CI = (29.42955, 32.57045)
CI = (29.4, 32.6) to 1dp
The confidence interval will be within the range 29.4≤μ≤32.6
That is not a question. Did you mean $270 to pesos? Or 3000 pesos to Us
Hi Friend
Here is your answer
The volume V of a circular cylinder is given by
V=13πr2h cubic centimeters
where r is the radius in centimeters and h is the height in centimeters. Substitute V=255 and r=6 and solve for h.
Let me now if it is right.
Hope the answer I gave you helps!!!!