Since five 20's equal one hundred, multiply 4200 by 5 and get 21,000
Answer:
8
Step-by-step explanation:
Answer:
Step-by-step explanation:
Null hypothesis: u <= 3 minutes
Alternative hypothesis: u > 3minutes
Using a z test formula, z score is
z = (x - u) / (s/√n)
Where x = 3.1, u = 3, s = 0.5, n = 100
z = (3.1 - 3) / (0.5/√100)
z = (0.1) / (0.5/10)
z = 0.1/0.05
z = 2
To calculate for the p value assuming a 0.05 level of significance, the p value is 0.02275 which is less than 0.05. Thus we will reject the null and conclude that there is enough statistics evidence to show that the mean waiting time of all customers is significantly more than 3 minutes.
I don’t know why I never think there’s that many people
Answer:
7,640,000
Step-by-step explanation:
The digit 3 is the ten thousands place. However, because the thousands place is 9, you round up to 40,000 to get 7,640,000.
