Answer:
23.5 is the answer
Step-by-step explanation:
X10 =235 so x=235÷10 = 23.5
B, because
3/15=x/75
75/15=5
3*5=15
15 is your answer.
Answer:
70%
Step-by-step explanation:
21/30 p/100
30/30=2,100/30=70
20.50 * 0.8 = $16.40
16.40 * 0.4 = $6.56
Final selling price = $6.56
Answer:
The 80% confidence interval for difference between two means is (0.85, 1.55).
Step-by-step explanation:
The (1 - <em>α</em>) % confidence interval for difference between two means is:

Given:

Confidence level = 80%

*Use a <em>t</em>-table for the critical value.
Compute the 80% confidence interval for difference between two means as follows:

Thus, the 80% confidence interval for difference between two means is (0.85, 1.55).