A researcher is interested in determining whether a new drug lowers blood pressure more than a leading drug. The average systoli
c blood pressure was analyzed for 10 people using the drugs. The mean systolic blood pressure of the people using the new drug is 121.7 millimeters of mercury whereas the mean systolic blood pressure for those using the leading drug was 123.1 millimeters of mercury. After rerandomizing the data 100 times, the following dot plot was generated.
Hint: where SD is the standard deviation, XH is the high value, and XL is the low value
Hint: where SD is the standard deviation and N is the sample size
What is the margin of error, rounded to the nearest hundredth, for this experimental study?
Hint: where SD is the standard deviation, XH is the high value, and XL is the low value
Hint: where SD is the standard deviation and N is the sample size
What is the margin of error, rounded to the nearest hundredth, for this experimental study?
2 answers:
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Answer:
Option C.The decrease in the value of the motorcycle, which is 9%
Step-by-step explanation:
we have a exponential function of the form
where
a is the initial value
b represents growth or decay factor
If b >1 then it is an exponential growth
if 0<b<1 then it is an exponential decay
In this problem
a=$19,000
b=0.91 -----> it is exponential decay factor
Find the rate of decrease r
b=(1-r)
substitute
0.91=1-r
r=1-0.91=0.09
Convert to percentage
0.09*100=9%
therefore
0.91 represent the decrease in the value of the motorcycle, which is 9%