题目1单选题
统计量<img src="https://tihai-oss-cloud.itihey.com/img/1127c323c229537c90751c0444b79025.webp">(卡方)的取值范围是A. (-<img src="https://tihai-oss-cloud.itihey.com/img/e1c81976b90947a4687016a1d43fe01f.webp">,0)B. (-<img src="https://tihai-oss-cloud.itihey.com/img/7b3220d6059da806fe723a13f5b8ed59.webp">,<img src="https://tihai-oss-cloud.itihey.com/img/7b3220d6059da806fe723a13f5b8ed59.webp">)C. (0,<img src="https://tihai-oss-cloud.itihey.com/img/7b3220d6059da806fe723a13f5b8ed59.webp">)D. (-1,1)E. (-<img src="https://tihai-oss-cloud.itihey.com/img/7b3220d6059da806fe723a13f5b8ed59.webp">,1)