Answer:
b. quadruple the sample size.
Step-by-step explanation:
Given that a 95% confidence is given by (15,20) .
this implies that mean = average of lower and higher bounds of confidence interval = 
Margin of error = Upper bound - Mean = 
Confidence level = 95%
Critical value = 1.96
Std error = 
Std devition = Std error * sqrt n = 6.3775
If we want to reduce margin of error by half we must get margin of error as 1.25
For that std error for same critical value = 0.63775
Std deviation did not change
So sample size only changed which implies that sample size is 4 times the original
b. quadruple the sample size.
Answer: 1. In a grocery store 2. in architecture 3. in cooking 4. In factories 5. banking
Step-by-step explanation:
cebause...
Answer:
60cm
Step-by-step explanation:
200*3/10=20*3=60
Answer:
$33.33
Step-by-step explanation:
Use the formula i = prt, where p is the principal, r is the interest rate as a decimal fraction and t is the elapsed time in years.
Here, i = $500*(0.10)*(2/3 year) = $33.33
Answer:
C. ∠SRT≅∠VTR and ∠STR≅∠VRT
Step-by-step explanation:
Given:
Quadrilateral is a parallelogram.
RS║VT; RT is an transversal line;
Hence By alternate interior angle property;
∠SRT≅∠VTR
∠STR≅∠VRT
Now in Δ VRT and Δ STR
∠SRT≅∠VTR (from above)
segment RT= Segment RT (common Segment for both triangles)
∠STR≅∠VRT (from above)
Now by ASA theorem;
Δ VRT ≅ Δ STR
Hence the answer is C. ∠SRT≅∠VTR and ∠STR≅∠VRT
