Answer:
4.4444 percent.
Step-by-step explanation:
1cm = 10mm
So 9cm would equal out to 90mm ...
4 mm would be 4.44 percent of the 9cm.
is (4) % (?)
of (90) 100
Cross X mutiply and divide..
4x100 = 400
90 x % = 90... & 400 divided by 90 = 4.444
Answer:
Step-by-step explanation:
Are the outcomes on the two cards independent? Why?
Yes. The events can occur together. No. The probability of drawing a specific second card depends on the identity of the first card. No. The events cannot occur together. Yes. The probability of drawing a specific second card is the same regardless of the identity of the first drawn card.
Answer:
1/3 and 2/3. Difference is 1/3.
Step-by-step explanation:
One part out of three. Numerator divided by Denominator of the (as whole), then the portion is two parts out of three(whole): Therefore the difference is 2/3 - 1/3 = 1/3.
Note : whenever parts out of the whole is written except one part, rest are plural of the whole and that's why the plurality is made to the denominator only. And not to the numerator. E.g one fifth, two sevenths etc
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).