Question

Question 12 (0.75 points) A random sample of 64 seccond-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is 51.03. Assume the standard deviation for the population of test scores is 15. The nationwide average score on this test is 50. The school superintendent wants to know whether the second-graders in her school district have greater math skills than the nationwide average. Perform the hypothesis test and compute the P-value. Write down your P-value. You will need it for the next question Round your answer to four decimal places (for example: 0.2305). Write only a number as your answer. Your Answer: Answer

Answer 1

solution Given n=64 X= 51.03 le = 50 S.Do 15 Z = X-4 SH03-50 15/164 = 1.03 1.875 20.5493 P-value = 0.2914 = 02914 Lone -Tail) P3005 ® There is not enough evidance to concled that the sand graden in hu district have greater math skills