Answer:
3(4+3^2)×8
Step-by-step explanation:
Evaluate the power
3(4+9)×8
Add the numbers 3×13×8
Calcuate the product and it will be 312
So the expression 3×(4+3^2)×8 are equivalent to 312
Hope this helpsʕ•ᴥ•ʔ
Part A:
From the central limit theorem, since the number of samples is large enough (up to 30), the mean of the the mean of the average number of moths in 30 traps is
0.6.
Part B:
The standard deviation is given by the population deviation divided by the square root of the sample size.

Part C:
The probability that an approximately normally distributed data with a mean, μ, and the standard deviation, σ, with a sample size of n is greater than a number, x, given by

Thus, given that the mean is 0.6 and the standard deviation is 0.4, the probability that <span>the average number of moths in 30 traps is greater than 0.7</span> given by:
Answer:
x = 9
Step-by-step explanation:
81/9=9