[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgoL8mOKlzBV670rgkU-uzTZmwpG_k_-_8pfOI6KYqYs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2026-01-07 07:26:08",305178372,[8,9,10,11],"comparison test","probability test","goodness of fit test","normality test",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_49143999","Chap 9 Quzi","A statistical test conducted to determine whether to reject or not reject a hypothesized probability distribution for a population is known as a",[21,32,41,50,53,62,71,79,88,97],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],305178368,[25,26,27,28],"possible to test for equality of three or more population proportions","impossible to test for equality of the three population proportions, because chi-square tests deal with only two populations","customary to use a t distribution to test for equality of the three population proportions","reasonable to test for equality of multiple population proportions using chi-square lower tail tests","If there are three or more populations, then it is","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],305178369,[36,37,38,39],"Poisson distribution","t distribution","normal distribution","chi-square distribution","The sampling distribution for a goodness of fit test is the",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],305178371,[45,46,47,48],"number of sample items minus 1","number of populations minus 1","number of rows minus 1 times number of columns minus 1","number of populations minus number of estimated parameters minus 1","The number of degrees of freedom associated with the chi-square distribution in a test of independence is",{"answer":51,"createTime":5,"id":6,"options":52,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],305178378,[57,58,59,60],"18","15","6","10","The degrees of freedom for a table with 6 rows and 3 columns is",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],305178380,[66,67,68,69],"proportions","means","variances","standard deviations","Marascuilo procedure is used to test for a significant difference between pairs of population",{"answer":72,"createTime":5,"id":73,"options":74,"question":78,"source":30,"type":31},[],305178381,[75,76,77,60],"83","90","30","Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.Freshmen 83Sophomores 68Juniors 85Seniors 64We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The expected number of freshmen is",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":30,"type":31},[],305178385,[83,84,85,86],"54","65","1.66","6.66","Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.Freshmen 83Sophomores 68Juniors 85Seniors 64We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":30,"type":31},[],305178386,[92,93,94,95],"should not be rejected","should be rejected","was designed wrong","cannot be tested","Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.Freshmen 83Sophomores 68Juniors 85Seniors 64We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. At a .05 level of significance, the null hypothesis",{"answer":98,"createTime":5,"id":99,"options":100,"question":105,"source":30,"type":31},[],305178389,[101,102,103,104],"0","8.4","62.5","82.5","The table below gives beverage preferences for random samples of teens and adults. Teens Adults TotalCoffee 50 200 250Tea 100 150 250Soft Drink 200 200 400Other 50 50 100total 400 600 1000We are asked to test for independence between age (i.e., adult and teen) and drink preferences. The test statistic for this test of independence is"]