Answer: 0.70.
Step-by-step explanation:
Given : For the sample of 138 tables, the average height was found to be 34.3in. with a variance of 0.7.
It means the sample variance ([tex]s^2[/tex]) is 0.70.
Since , we know that the sample variance is the best point estimate of the population variance in a statistical study.
Therefore , a point estimate for the population variance of the height of the tables would be 0.70.
Hence, the correct answer is 0.70.
