The twins are 13 , 13x13x20=3380 and 13+13+20=46 , 3380-46=3334
Answer:
There first neeed to be an x variable in the qusetion then i will wdit my answer
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
The median would be 27.
The median of a data set is the middle number in the set. Therefore, if you want to calculate the median of a data set you must first order the values from least to greatest. Then find the middle number and that is the median.
2, 8, 19, 27, 31, 51, 3335