Imagine that a researcher appropriately collects data from 100 people from a particular population for variable x. he obtains a mean of 45.9 from these 100 people. he also knows that the population mean for variable x is 45 ( μ = 45 ) with a standard deviation of 5 ( σ = 5 ). using this information, compute the z statistic.

Z = 0.18

Step-by-step explanation:

The Z statistic measures the statistic observed and the parameter of the population and can be calculated by the equation:

Z = (x - μ)/σ

where μ is the mean , x is the borderline, and σ is the standard deviation. So:

Z = (45.9 - 45)/5

Z = 0.18

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8