Answer:
A. Decreasing linear
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
Rotation doesn't alter the lengths.
6×2 = 12
Answer: Probability of meeting is 0.67
Step-by-step explanation: Since each person decided to wait for 20minutes thus within an hour a maximum of 40minutes is spent waiting by both parties.Therefore, Probability of meeting will be 40mins/60mins=0.666 approximately 0.67
Answer:
should be A
Step-by-step explanation:
please give brainliest
Answer: The sample mean
Step-by-step explanation:
The confidence interval is given by :-
Sample mean ± Margin of error
Given : The scores on a standardized test are normally distributed. If a random sample of standardized test scores is taken and the confidence interval is (497,537).
i.e. Sample mean - Margin of error = 497 ..(i)
Sample mean + Margin of error=537 ..(ii)
Adding (1) and (2), we get
2 (Sample mean) = 1034
⇒Sample mean = 517
Hence, the sample mean