A certain type of flashlight is sold with the four batteries included. A random sample of 150 flashlights is obtained, and the number of defective batteries in each is determined, resulting in the following data
![](https://test.transtutors.com/qimg/281b0776-0c87-4878-b0d7-b07e20d35eca.png)
Let X be the number of defective batteries in a randomly selected flashlight. Test the null hypothesis that the distribution of X is Bin(4, θ). That is, with pi = P(i defectivesd, test
![](https://test.transtutors.com/qimg/5d8866f2-7c1a-4df3-8e52-52caf12bb4b6.png)