A random sample of 54 students from Cabrillo College are selected from a normal population with mu equal to 20 and sigma equal to 5. After a treatment is administered to the students, the researcher calculated the sample mean to be 21. Is there enough evidence to conclude that the treatment had an effect at the 5% significance level? What statistical test is this? One-Sample T-Test for Mean Chi-Square Test for Independence Two-Sample T-Test for Mean O One-Sample Z-Test for Mean

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Use the following information to answer the question.
A random sample of 54 students from Cabrillo College are selected from a
normal population with mu equal to 20 and sigma equal to 5. After a
treatment is administered to the students, the researcher calculated the
sample mean to be 21. Is there enough evidence to conclude that the
treatment had an effect at the 5% significance level?
What statistical test is this?
One-Sample T-Test for Mean
Chi-Square Test for Independence
Two-Sample T-Test for Mean
One-Sample Z-Test for Mean
Transcribed Image Text:Use the following information to answer the question. A random sample of 54 students from Cabrillo College are selected from a normal population with mu equal to 20 and sigma equal to 5. After a treatment is administered to the students, the researcher calculated the sample mean to be 21. Is there enough evidence to conclude that the treatment had an effect at the 5% significance level? What statistical test is this? One-Sample T-Test for Mean Chi-Square Test for Independence Two-Sample T-Test for Mean One-Sample Z-Test for Mean
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