Can you show a better photo some of the question is cut off
Answer:
2x +7 +2x = 4x +7
Step-by-step explanation:
Just divide 121 by 11 to get your answer.
Answer:
Step-by-step explanation:
Given mean = 84,
Standard deviation = 2,
Sample 64,
95% confidence interval: z = 1.96
Applying empirical rule , means that 95% of data fall within two standard deviations.
ME = = 0.49
Rounding this to 0.5
CI = 83.5< mean < 84.5
Outside of this range= x ≤ 83.5 and ≥ 84.5