Answer:
c
Step-by-step explanation:
Answer:
1.80
Step-by-step explanation:
trust me 100% sure
Account balance is not proportional to the number of weeks.
Given:
mean = 64
standard deviation = 6
sample size = 50
Standard error of the sample mean = standard deviation / √sample size
Standard error = 6 / √50 = 6/7.07 =<span> 0.85</span>