My calculator says that probability is about 76.34%.
I'm not sure I think the answer is 2.433 and 6.848) and 737383) but I'm not sure
The expression you're looking for is (-1)²
Answer:
(48.65, 56.83)
Step-by-step explanation:
Given that :
Sample size (n) = 40
Mean (m) = 52.74
Standard deviation (s) = 13.21
α = 95%
Confidence interval around sample mean can be obtained using the relation :
Mean ± Zstatistic * s/√n
Z score for 95% confidence interval = 1.96 (Z probability calculator)
s / √n = 13.21 / √40 = 2.0886843
Lower limit of confidence interval :
52.74 - (1.96 * 2.0886843) = 48.646178772 = 48.65
Upper limit of confidence interval :
52.74 + (1.96 * 2.0886843) = 56.833821228 = 56.83
The median is 110
(you can find it by plotting all of the values and crossing the highest value, lowest value repeatedly until there is only one value left. in this case, it was 110)