Answer:
[tex] X= 189[/tex] represent the number of non-fatal accidents involved the use of a cell phone
[tex] n=400[/tex] represent the sample size
And we want to find a point estimate for p, the population proportion of non-fatal accidents that involved the use of a cell phone and we can use the following formula:
[tex]\hat p=\frac{X}{n}[/tex]
And replacing we got:
[tex] \hat p=\frac{189}{400}=0.4725[/tex]
Step-by-step explanation:
For this problem we have the following info given:
[tex] X= 189[/tex] represent the number of non-fatal accidents involved the use of a cell phone
[tex] n=400[/tex] represent the sample size
And we want to find a point estimate for p, the population proportion of non-fatal accidents that involved the use of a cell phone and we can use the following formula:
[tex]\hat p=\frac{X}{n}[/tex]
And replacing we got:
[tex] \hat p=\frac{189}{400}=0.4725[/tex]
