Step-by-step explanation:
The spores always x3 after a month so going a month back they ÷3 instead so 900÷3 is 300 spores on the first month
Answer:$18
Step-by-step explanation:
Answer: ($3.055, $3.205)
Step-by-step explanation:
Given : Significance level : 
Critical value : 
Sample size : n= 36
Sample mean : 
Standard deviation : 
The confidence interval for population mean is given by :_


Hence, the 95% confidence interval to estimate the population mean = ($3.055, $3.205)
Answer: 989.172
Step-by-step explanation:
A - The trip was 2 hours and 15 minutes which is also 135 minutes.
B - if the delays occurred the actual arrival time would be 11:15
Hope this helps !