Answer:
The top left graph
Step-by-step explanation:
All the others are wrong
Answer:
y= -6
Step-by-step explanation:
4y=2(y−5)−2
4y = 2y -10 -2
4y = 2y -12
2y = -12
y = -6
Im guessing this is a rectangle? If so it would be
16+16+25+25
32+50
82 is the perimeter
Answer:
a. Identify the population of interest in this study.
- all the population of the country
b. Identify the sample for the study.
- 50 adults (the ones that were surveyed)
c. Identify the parameter of interest in the study.
- the parameter of interest is the people that believe that coffee shops are overpriced
d. Find and interpret a 95% confidence interval for the parameter of interest.
z score for a 95% confidence level = 1.96
margin of error (E) = z score x √{[0.4(1 - 0.4)] / 50} = 1.96 x 0.069282 = 0.13579
95% confidence level interval:
0.4 - 0.13579 = 0.26421
0.4 + 0.13579 = 0.53579
- 95% confidence interval (0.26421 , 0.53579)
