PLEASE PLEASE HELP 30 POINTS AND WILL GIVE BRAINIEST
1 answer:
You might be interested in
Hey there!
Let solve this problem step by step :)
1. Convert 20/25 into a decimal. In order to do this, you will need to divide the numerator (the top part of the fraction) with the denominator (the bottom part of the fraction).
So,
as a decimal would be 0.8. (We divide 20 by 25)
2. Now, we take the decimal and multiply it by 100. To make it even simpler, just move the decimal, two places to the right. This makes it the percent. So,
0.8 ----> 80%
The final answer is 80%
Thank you!
Let solve this problem step by step :)
1. Convert 20/25 into a decimal. In order to do this, you will need to divide the numerator (the top part of the fraction) with the denominator (the bottom part of the fraction).
So,
2. Now, we take the decimal and multiply it by 100. To make it even simpler, just move the decimal, two places to the right. This makes it the percent. So,
0.8 ----> 80%
The final answer is 80%
Thank you!
The 97% confidence interval for the proportion of adults is 0.801<P<0.851.
Given that 867 adults are randomly selected from 1050 who always wear seat belts.
A confidence interval refers to the probability that a population parameter will fall between a set of values for a certain proportion of times.
Let's assume n=1050 and x=867
Find the sample proportion by dividing the given proportion with sample size as,
Find the α by subtracting the given confidence interval that is 97% from 1 as
α=1-(97÷100)
α=1-0.97
α=0.03
To find the critical value that is by dividing alpha with 2,
From this table which is shown in the figure it says that the critical value is
Use this formula to find the confidence interval
Substitute the values in the formula,
Hence, a 97% confidence interval for the proportion of adults who always wear seat belts is 0.801<P<0.851.
Learn more about confidence interval from here brainly.com/question/13929861
#SPJ4
