Answer:
B. The interval will be narrower if the researchers increase the sample size of droplets.
Step-by-step explanation:
Margin of error of a confidence interval:
The higher the margin of error, the wider an interval is.
In which z is related to the confidence level(the higher the confidence level, the higher z), 
is the standard deviation of the population and n is the size of the sample.
From this, we conclude that:
If we increase the confidence level, the interval will be wider.
If we increase the sample size, the interval will be narrower.
Which of the following statements about a 95 percent confidence interval for the mean width is correct?
Increasing the sample size leads to a narrower interval, so the correct answer is given by option B.
The answer is b island bike rentals $100 bicycle company $85. island bike rental goes up by $20 every day while bicycle company starts at $25 and goes up by $15 every day
Answer:
The answer is C.
Step-by-step explanation:
The answer is C. because for A. 4 * 13 is 52 not 72. For B. 7 * 9 is not 72 its 63. and D. It does not have 4 and 18.
A = 1/2 (12x² + 8x + 24x + 16)
A = 1/2 (12x² + 32x + 16)
A = 6x² + 16x + 8
-----------------------------------------------------------
Answer: 6x² + 16x + 8
-----------------------------------------------------------
23. If M' represents the complementary, then is the answer A.
24. The answer is C.
