Question

Question 27 1 pts A 2019 advertisement for the Philadelphia Phillies professional U.S. baseball team claimed attending a Phillies game would cost a family of four $172, on average. A random sample of 22 families of four who attended a Phillies game in 2019 revealed a mean cost of $154.66 with a standard deviation of $33.65. If the level of significance equals 0.10, determine the critical value for the associated test statistic +/- 1.7207 -1.7207 +/- 1.3232 -1.3232 Question 28 1 pts A test of hypotheses resulted in 0.06 <p-VALUE < 0.09. Which level(s) of significance below would lead to Reject Null? 0.05 0.10 0.05,0.10 0.01,0.05

Answer 1

Solution:

Question 27)

Read the claim.

Two tailed test.

$\alpha$ = 0.10

$\alpha$/2 = 0.05

df = n - 1 = 22 - 1 = 21

  $\pm t_{\alpha/2,d.f.}$ = $\pm$ t_{0.05 , 21} = $\pm$ 1.7207

Answer : $\pm$ 1.7207

Question 28)

When p value is less than the significance level , we reject the null hypothesis.

So , to reject the null , we select larger level of significance level.

Answer : 0.10