Answer:
55.22 salamanders
Step-by-step explanation:
Z score formula is given as:
Z score = x - μ/σ
x = 16.8 cm
μ = mean = 15cm
σ = standard deviation 2cm
Z score = 16.8 - 15/2
= = 0.9
Probability value from Z-Table:
P(x<16.8) = 0.81594
P(x>16.8) = 1 - P(x<16.8)
1 - 0.81594
= 0.18406
In a collection of 300 salamanders, about how many have length greater than 16.8cm?
= 300 × 0.18406
= 55.218 salamanders
Approximately to the nearest hundredth = 55.22 salamanders
Therefore, 55.22 salamanders have length greater than 16.8cm
