Answer:
The null and alternative hypotheses are:
[tex]H_{0}:\mu=17.00[/tex]
[tex]H_{a}:\mu \neq 17.00[/tex]
We are given that the test statistic is:
[tex]t=1.874[/tex]
Also we are given the sample size [tex]n=20[/tex]
Now we have to find the t critical value at 0.05 (assumed) significance level for [tex]df=n-1=20-1=19[/tex]
Using the t distribution table, we have:
[tex]t_{0.05,19}=\pm2.093[/tex]
Conclusion: Since the t statistic does not lie outside the t critical values, therefore, we fail to reject the null hypothesis and conclude that there is sufficient evidence to support the claim that a smartphone carrier's mean data speed at airports is 17.00 Mbps.
