Exercise 10-5 Algo

Consider the following competing hypotheses and accompanying sample data drawn independently from normally distributed populations.(You may find it useful to reference the appropriate table:ztableorttable) H₀:?₁??₂? 0 H_A:?₁??₂

x?1x?1= 263	x?2x?2= 270
s1= 33	s2= 24
n1= 13	n2= 13

a-1.Calculate the value of the test statistic under the assumption that the population variances are equal.(Negative value should be indicated by a minus sign. Round final answer to 3 decimal places.)