Data on fifth-grade test scores (reading and mathematics) for 414 school districts in California yleld Y -613 9 and standard deviation ay 18 5 The 95% confidence interval for the mean test score in the population is (D (Round your responses to two decimal places) When the districts were divided into districts with small classes (<20 students per teacher) and large classes (220 students per teacher), the following results were found Class Size Average Score (Y) Standard Deviation (sy) Small 624.5 18 4 244 Large 6175 17.0 180 s there statistically significant evidence that the districts with smaller classes have higher average test scores? The t-statistic for testing the null hypothesis is (Round your reaponse to two decimal places) The p value for the test is (Round your response to six decimal pleces) lo there statistically significant evidence that the districts with smaller classes have higher average test scores? Vwith a high degree of confidence Hence, statistically significant evidence uggests that the null hypothesis that the districts with smaller classes have higher average test scores The

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