Question 22 (1 point) Evaluate: I/Pr for P = $500, I = $13.75, r 0.11 O a 0.500 O b 0.250 Ос 1.50 2.50 O e None of these

A college chemistry instructor thinks the use of embedded tutors will improve the success rate in introductory chemistry courses. The passing rate for introductory chemistry is 73%. During one semester, 200 students were enrolled in introductory chemistry courses with an embedded tutor. Of these 200 students, 162 passed the course. The instructor carried out a hypothesis test and found that the observed value of the test statistic was 2.55. The p-value associated with this test statistic is 0.0054. Explain the meaning of the p-value in this context. Based on this result, should the instructor believe the success rate has improved? State the hypotheses that were used for the test Choose the correct answer below. OA. Ho: p=0.73 and Ha: p>0.73 OB. Ho: p0.73 OC. Ho p=0.73 and Ha: p0.73 and Ha: p<0.73 OE. Ho: p=0.73 and Ha: p# 0.73 Explain the meaning of the p-value in this context. Select the correct choice below and fill in the answer box within your choice. (Type an integer or a decimal.…

Find ∑x. Find ∑x. X 0.001 0.029 0.136 0.259 0.470 enter your response here ∑x= ​(Type an integer or a decimal. Do not​ round.)

Twenty one out of forty-five 6th graders prefer chocolate ice cream. Express this as a decimal. 0.46 O 0.46 2.14