Data on fifth-grade test scores (reading and mathematics) for 439 school districts in California yield Y = 594.5 and standard deviation sy = 17.9. The 95% confidence interval for the mean test score...

Extracted text: Data on fifth-grade test scores (reading and mathematics) for 439 school districts in California yield Y = 594.5 and standard deviation sy = 17.9. The 95% confidence interval for the mean test score in the population is ( 592.83 , 596.17 ). (Round your responses to two decimal places.) When the districts were divided into districts with small classes (<20 students="" per="" teacher)="" and="" large="" classes="" (2="" 20="" students="" per="" teacher),="" the="" following="" results="" were="" found:="" class="" size="" average="" score="" (y)="" standard="" deviation="" (sy)="" n="" small="" 604.8="" 17.8="" 243="" large="" 598.0="" 16.5="" 185="" is="" there="" statistically="" significant="" evidence="" that="" the="" districts="" with="" smaller="" classes="" have="" higher="" average="" test="" scores?="" the="" t-statistic="" for="" testing="" the="" null="" hypothesis="" is="" 4.08="" .="" (round="" your="" response="" to="" two="" decimal="" places.)="" the="" p-value="" for="" the="" test="" is="" (round="" your="" response="" to="" six="" decimal="" places.)="" hint:="" use="" the="" excel="" function="" norm.s.dist="" to="" help="" answer="" this="">