Answer:
120 girls attended the school play. :)
Step-by-step explanation:
there are 200 children.
40% are boys.
this means 60% are girls.
60% + 40% = 100%
60% of 200 is 120
Answer:
Step-by-step explanation:
Given that many couples believe that it is getting too expensive to host an "average" wedding in the United States.
Population mean =24066
Sample mean = 23224
Sample size = 40
Sample std dev = 2903
Since sample std dev is known, we use t critical value.
df =39
Sample mean follows a normal distribution with mean = 23224, and std dev =
t critical value = 2.023
Margin of error = 2.023*459.005
Confidence interval