Find the arc length that subtends a central angle of 2 rad in a circle of radius 2mi
1 answer:
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Answer:
The p value for a left tailed test would be:
Since the p value is very higher we can conclude that the true proportion of teenagers who floss twice a day is NOT less than 40%.
Step-by-step explanation:
Information given
n=400 represent the random sample given
X=149 represent the floss twice a day
estimated proportion of floss twice a day
is the value the proportion that we want to check
z would represent the statistic
represent the p value
System of hypothesis
We want to check proportion of teenagers who floss twice a day is less than 40%, so then the system of hypothesis are.:
Null hypothesis:
Alternative hypothesis:
For the one sample proportion test the statistic is given by:
(1)
If we replace the info given we got:
The p value for a left tailed test would be:
Since the p value is very higher we can conclude that the true proportion of teenagers who floss twice a day is NOT less than 40%.
I know you cant understand the lines but im sorry this is all I could do
Hope it helps
Hope it helps