Answer:
I belive i is 5
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given that in order to efficiently bid on a contract, a contractor wants to be 95% confident that his error is less than two hours in estimating the average time it takes to install tile flooring.
Std deviation =4.5 errors
95% confidence interval = Mean±1.96*std dev
Hence we have
Sample size should be 20.
Answer:
45 feet
Step-by-step explanation:
Use ratios:
x = 540 inches
divide by 12 to get 45 feet
Greetings!Solve using the properties of equality:
Add
-5 to both sides.
Divide both sides by
3.
The Answer Is:Hope this helps.
-Benjamin