A researcher is using a special phonics reading technique to help 10-year-olds to read. She wants to know if the
technique has helped. To assess reading comprehension, she selects a nationally known test of comprehension on which the national mean score for 10-year-olds is 50 with a standard deviation of 7.5. The mean of the sample of 50 students is 54. Does the special phonics reading technique increase comprehension? Use .05 as the level of significance.
Compute the test statistic. Report your answer to two decimal places.