Answer:
The group's claim is not supported at 1% significance level.
Step-by-step explanation:
given that a local group claims that the police issue more than 60 speeding tickets a day in thire area
The data they collected for 2 weeks is given below:
70 48 41 68 69 55 70
57 60 83 32 60 72 58
[tex]\bar x = 60.2\\s = 12.9\\n=14[/tex]
Std error of mean = [tex]\frac{12.9}{\sqrt{14} } \\=3.4477[/tex]
[tex]H_0: \bar x=60\\H_a: \bar x >60[/tex]
(Right tailed test at 1% significance level)
Mean difference = 0.10
Test statistic t with df 13 = mean difference/std error
= 0.029
p value = 0.4886
Since p >0.01, we accept null hypothesis
The group's claim is not supported at 1% significance level.
