Answer: 3 seconds
Step-by-step explanation: the pump fills 1 tire per second
Answer:
3.1/30
Step-by-step explanation:
hope this helps
Answer: 2.093
Step-by-step explanation:
As per give , we have
Sample size : n= 20
Degree of freedom : df= n-1=19
Significance level : 
Since , the sample size is small (n<30) so we use t-test.
For confidence interval , we find two-tailed test value.
Using students's t-critical value table,
Critical t-value : 
Thus, the critical value for the 95% confidence interval = 2.093
X = 110
110-108 = 2
27*2=54
Answer:

Step-by-step explanation:




