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A researcher wants to know if students at UCLA have a similar GPA average as all...

A researcher wants to know if students at UCLA have a similar GPA average as all college students world-wide. The world wide average is 2.8 with a standard deviation of 0.44. The researcher randomly gets the GPA of 100 UCLA students and determines the sample mean to be 2.7 with a standard deviation of 0.38. What is the best statistical test to use to determine if the GPA of UCLA students is similar to the world wide average?

A. One sample z-test
B. One sample t-test
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