In conducting the hypothesis test below, your sample consists of 27 observations, with a mean of 20.2 and standard deviation of 3.43. H0:=18.4 H1:18.4 a) This is a Select an answer no-way test. left-tailed test. right-tailed test. two-tailed test. none of the above b) Calculate the test statistic, rounded to 3 decimal places. t= c) At =0.05, the rejection region is

• t<-1.706
• t>1.706
• t<-2.056ort>2.056
• none of the above

d) The decision is to

• reject H1 since the test statistic falls in the rejection region.
• fail to reject H0 since the test statistic does not fall in the rejection region.
• reject H0 since the test statistic falls in the rejection region.
• fail to reject H1 since the test statistic does not fall in the rejection region.
• none of the above