A credit reporting agency claims that the mean credit card debt in a town is greater than $3500. A random sample of the credit card debt of 20 residents in that town has a mean credit card debt of $3600 and a standard deviation of $391. At a=0.10, can the credit agency's claim be supported, assuming this is a normally distributed data set? Homework Help. 6VD. Hypothesis test example, sample standard deviation (5:12) 6DE. When to use z and when to use t distribution (DOCX) No, since p-value of 0.13 is greater than 0.10, fail to reject the null, Claim is alternative, so is not supported Yes, since p-value of 0. 13 is less than 0.55, reject the null. Claim is alternative, so is supported O No. since p-value of 0.13 is greater than 0.10, reject the null. Claim is null, so is not supported () Yes, since p-value of 0. 13 is greater than 0. 10, fail to reject the null. Claim is null, so is supported