Answer:
The answer is Triangle C
Step-by-step explanation:
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 = $6
Confidence Interval formula is expressed as:
CI = xbar ± Z(σ/√n)
Z value for 80% confidence interval is 1.282
Substituting the values into the Confidence Interval formula will give;
CI = 31 ± 1.282{6/√24}
CI = 31 ± 1.282(1.225)
CI = 31 ± 1.57045
CI = 31+1.57045 and 31-1.57045
CI = (29.42955, 32.57045)
CI = (29.4, 32.6) to 1dp
The confidence interval will be within the range 29.4≤μ≤32.6
Hey there! :D
First, we need to solve the absolute value.
|s-14| <0.5
Keep the s-14 the same, and make the 0.5 the same for one solution, and flip the sign and make 0.5 negatives for the other solution.
s-14 <0.5
s-14>-0.5
(first solution)
s-14<0.5
Add 14 to both sides.
s<14.5
(second solution)
s-14>-0.5
Add 14 to both sides.
s>13.5
The solutions are:
s<14.5; s>13.5
I hope this helps!
~kaikers
Answer:
500$
Step-by-step explanation: