Answer:
Step-by-step explanation:
hello :
√(5/4)= √5/ √4 =√5/2 = (1/2)√5
3+√5/4−√5 = 3+(1/2)√5 so : a=3 and b= 1/2
89
we evaluate when t=2
so it's 89 feet
20, 31, 33, 35, 55, 57, 58, 59, 72, 73, 79, 86, 87, 88
The data set is split by digit. So 2|0 becomes 20. 5|5 becomes 55. Using this method, the data set is
Mean = 30516.67
Standard deviation, s = 3996.55
P(x < 27000) = 0.0011518
Given the data:
28500 35500 32600 36000 34000 25700 27500 29000 24600 31500 34500 26800
Mean, xbar = Σx / n = 366200 /12 = 30516.67
Standard deviation, s = [√Σ(x - xbar) / n-1]
Using calculator, s = 3996.55
The ZSCORE = (x - mean) / s/√n
Zscore = (27000 - 30516.67) / (3996.55/√12)
Zscore = - 3516.67 / 1153.7046
Zscore = - 3.048
P(x < 27000) = P(Z < - 3.049) = 0.0011518
the answer is 1 and 4
Start by subtracting, so on #1 subtract 5-8, 8-11, 11-14
then go up to x, -2--1, -1-0, 0-1
Answer: 1 and 4 are correct
Step-by-step explanation: good luck!