there were 600 soldiers in the battle. The ratio of Texas soldiers to Mexican soldiers was 7:3, how many more Texan soldiers wer
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REASON:
[CONCEPT USED: <u>Unitary method</u>]
Number of pages typed by student in 1/5 hour = 2/3
No. of pages typed by the student in 1 hour=
=
= 10/3
=
So number of pages written in 1 hour are
3 pages and 1/3 of a page
HOPE IT IS USEFUL
Answer:
Ther has been an increase in the selling time.
Step-by-step explanation:
Step 1. Specify the null hypotesis
In this case, we have to demonstrate that the selling time is now different than before the drought.
Step 2. Choose a significance level
In this problem, is 0.10
Step 3. Compute the mean
In this case, the mean of the sample is 94.
Step 4. Compute the probability value (p) of obtaining a difference between the mean of the sample and the hypothesided value of μ.
The degrees of freedom are calculated as (N-1) = (100-1) = 99. Then we can look up in the t-table (http://davidmlane.com/hyperstat/t-table.html) to calculate the probability value of a t of 1.818 with 99 degrees of freedom. The value of this probability is 0.05.
Step 5. Compare the P-value (0.05) with the significance level (0.10). Since the P-value is less than the significance level, the effect is significant.
Since the effect is significant, the null hypotesis is rejected.
It is concluded that the mean of the selling time has changed (increase) from its previous value.