If the observed value is 4, the expected value is 5, and the standard error is 3, then the test value used for the z test is equal to
A)0.33
B)1.00
C)-1.00
D)-0.33
A recent survey indicated that the average amount spent for breakfast by business managers was $7.58,
With a standard deviation of $0.42.It was felt that breakfasts on the West Coast were higher than $7.58.A
Sample of 81 business managers on the West Coast had an average breakfast cost of $7.65.

Question

Quizplus · Accepted Answer

The test value for a z test is calculated using the formula $z = \frac{(observed\ value - expected\ value)}{standard\ error}$. Plugging in the given values, $z = \frac{(4 - 5)}{3} = -\frac{1}{3} = -0.33$.

If the Observed Value Is 4, the Expected Value Is