A Team of Researchers Conducted a Single-Sample T Test and Found

Multiple Choice

A team of researchers conducted a single-sample t test and found that the 95 percent confidence interval around their sample mean includes the value of the population mean.Based on this, they should conclude that:

A) the null hypothesis should be rejected.
B) their data are insufficient to assess the validity of the null hypothesis.
C) they failed to find a significant difference between the sample and population means.
D) the research hypothesis is supported.