Answer:
Option B.
Step-by-step explanation:
The given expression is
We need an expression Which represents the same solution as the given expression.
It can be written as
![(4)[-(3+\dfrac{1}{8})]](https://tex.z-dn.net/?f=%284%29%5B-%283%2B%5Cdfrac%7B1%7D%7B8%7D%29%5D)
![(4)[-3-\dfrac{1}{8}]](https://tex.z-dn.net/?f=%284%29%5B-3-%5Cdfrac%7B1%7D%7B8%7D%5D)
Since is equivalent to given equation, therefore this equation represents the same solution as the given expression.
Hence, option B is correct.
Yes it is d now can you please follow me
Answer: a) α = 0.7927, b) at u=14.8, β = 0.99767, at u = 14.9, β= 0.2073
Step-by-step explanation: a) from the question, u= population mean = 15 and x= sample mean = 14.9
σ = population standard deviation = 0.5, n = sample size = 50.
We get the probability of committing a type 1 error by using the z score.
Z = x - u/(σ/√n)
Z = 14.9 - 15/(0.5/√50)
Z = - 0.1/0.0707
Z = - 1.41.
By checking the the probabilistic value attached to this z score using a standard normal distribution table whose area is to the left of the distribution, we have that
P(z=-1.41) = 0.7927.
Hence the probability of committing a type 1 error is 0.7927
b)
at x = 14.8 ( I let ua=x=14.8)
Z = x - u/(σ/√n)
Z = 14.8 - 15/(0.5/√50)
Z = - 0.2/ 0.0707
Z = - 2.83
Using the standard normal distribution table, we have that
P(z=-2.38) = 0.00233.
But α + β = 1
Where α= probability of committing a type 1 error
β = probability of committing a type 2 error.
β = 1 - α
β = 1 - 0.00233
β = 0.99767
At x = 14.9
Z = x - u/(σ/√n)
Z = 14.9 - 15/(0.5/√50)
Z = - 0.1/0.0707
Z = - 1.41.
P(z=-1.41) = 0.7927.
α = 0.7927.
But α + β = 1
β = 1 - 0.7927
β = 0.2073
The answer is x^2-2^2
X^2-4
The answer is:
2((4^2)^-1)
= 2 * 16^-1
= 2 * 1/16
= 2/16
Answer = 1/8 (Decimal is 0.125)
