Answer:
22 hours = hours travelling altogether
Step-by-step explanation:
11 x 2 = 22
Answer:
Step-by-step explanation:
n = 400
Proportion p = 229/400= 0.5725
For 95% confidence interval we use Z value as 1.96
Std error = 0.025
margin of error = 1.96*0.025
Confidence interval 95% = 0.5725±Margin of error
= (0.524, 0.621)
b) When smiled x becomes 277
p = 0.6925
Std error = 0.023
Margin of error= 1.96*0.023
Confidence interval = (0.647, 0.738)
Smiling increases the chances of stopping since mean and conidence interval bounds are showing increasing trend.
Answer:
a 
b 
c 0 customers
Step-by-step explanation:
Given
per customer
Solving (a): Amount (A) on n customers
This is calculated as:
Solving (b): Amount on 134 customers
In this case: n = 134
So:
Solving (c): Customers at noon.
At noon, the amount is 30.
So:
Collect like terms
You just have to add each amount of snow to figure out the total. This will get you 10.989
