Look like both B and D are correct answers. because 23*400=9200 and 26*400=10400
Answer:
Step-by-step explanation:
Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

(Two tailed test for variance )
Sample variance =480
We can use chi square test for testing of hypothesis
Test statistic = 
p value = 0.0100
Since p <0.05 our significance level, we reject H0.
The sample variance cannot be claimed as equal to 300.
Answer:4x^3-2x^2+20x-10
Step-by-step explanation:
A) 1 out of 4
B) 1 out of 4
The hundred thousands place is the 2. Since the place below that is 0, it rounds down.
200,000