You wish to test the following claim (Ha) at a significance level of=0.05.

Ho:=54.9

Ha:54.9

You believe the population is normally distributed and you know the standard deviation is=15.2. You obtain a sample mean ofM=56.9

for a sample of sizen=48

.

What is the critical value for this test? (Report answer accurate to three decimal places.)

critical value =__________

What is the test statistic for this sample? (Report answer accurate to three decimal places.)

test statistic =____________

This test statistic leads to a decision to...

• reject the null
• accept the null
• fail to reject the null