Using traditional methods, it takes 9696 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 150150 students and observed that they had a mean of 9595 hours. Assume the standard deviation is known to be 88. A level of significance of 0.050.05 will be used to determine if the technique performs differently than the traditional method. Find the value of the test statistic. Round your answer to 2 decimal places.

The value of the test statistic is -1.53            

Step-by-step explanation:

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 96 hours

Sample mean, = 95 hours

Sample size, n = 150

Alpha, α = 0.05

Population standard deviation, σ = 8 hours

Formula:

Putting all the values, we have

Thus, the value of the test statistic is -1.53

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

you would need to know all the numbers that are on there

step-by-step explanation: