Answer:
0.4588
Step-by-step explanation:
When we have random sample, the z score formula we use is:
z = (x-μ)/σ/√n
where x is the raw score = 14
μ is the population mean = 13.9
σ is the population standard deviation = 2.9
n is random number of samples = 9
z = 14 - 13.9/2.9/√9
z = 0.1/2.9/3
z = 0.10345
Probability value from Z-Table:
P(x<14) = 0.5412
P(x>14) = 1 - P(x<14) = 0.4588
The probability that their mean life will be longer than 14 years is 0.4588
Answer:
Step-by-step explanation:
y + 1 = 3(x - 2)
y + 1 = 3x - 6
y = 3x - 7
280cm because if you multiply all of them up
fix what wheres the photo of it idsi
