Answer:
can you show the answer choices, please?
Step-by-step explanation:
Answer:
The 99% confidence interval for the difference between the true average load for the fiberglass beams and that for the carbon beams is (-11.937, -6.863).
Step-by-step explanation:
We have to calculate a 99% confidence interval for the difference between the true average load for the fiberglass beams and that for the carbon beams.
The sample 1 (Fiberglass), of size n1=26 has a mean of 33.4 and a standard deviation of 2.2.
The sample 2 (Carbon), of size n2=26 has a mean of 42.8 and a standard deviation of 4.3.
The difference between sample means is Md=-9.4.
The estimated standard error of the difference between means is computed using the formula:
The critical t-value for a 99% confidence interval is t=2.678.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 99% confidence interval for the difference between the true average load for the fiberglass beams and that for the carbon beams is (-11.937, -6.863).
It could have been oh so much easier to choose the best choice
if you had but told me what the choices are.
The most appropriate choice depends on why you want to know,
and what you plan on doing with the information. Are you going to
use it to help you decide ...
-- How many entrance gates to build ?
-- How many ticket-takers to hire ?
-- What size parking lot is needed ?
-- How much ice cream and beer to stock in the park each day ?
-- How many rest rooms the park needs ?
-- How many costumed characters should roam the park ?
-- How many police should patrol the park ?
-- How much the park needs to be advertised in the next 6 months ?
-- Whether it will pay to build another similar park somewhere else ?
Depending on the application, here are some appropriate units
to describe the rate at which people are entering a theme park:
-- visitors per minute
-- visitors per hour
-- visitors per day
-- visitors per week
-- visitors per month
-- visitors per year
Answer: 1/864 =0.00116
Step-by-step explanation: simplify 3/8
divide 3/8 by 5= 3/40
3/40 divided by 24 =1/720
10/27 X 1/320= 1/864
simplify 10/27 and get 1/864 as a fraction but in a decimal 0.00116
It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
