The Next Questions Are Based On The Following Information:
An alcohol brewery firm claims that the proportion of alcohol in their new drink is at most 10 percent.A random sample of 100 bottles of the drink were selected and found to consist of 9 percent alcohol.
-What is the value of test statistic for this sample?
A)2.70
B)-0.85
C)-0.33
D)-1.66

Question

Quizplus · Accepted Answer

The test statistic is calculated using the formula for a proportion: (p̂ - p0) / √(p0(1-p0)/n), where p̂ is the sample proportion (0.09), p0 is the claimed proportion (0.10), and n is the sample size (100). Plugging in the values gives (-0.01) / √(0.10*0.90/100) = -0.33.

The Next Questions Are Based on the Following Information