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The registrar of a certain school claimed that the average IQ of their students is 105 with a standard deviation of 4.5. To verity the validity of the statement made by the researcher, a psychology student conducted an investigation by taking 30 students as his participants and found them to have an average IQ of 103.34. Based on the results, can we confirm the claim of the registrar? Use 1% level of significance.

The registrar of a certain school claimed that the average IQ of their students is 105 with a standard deviation of 4.5. To verity the validity of the statement made by the researcher, a psychology student conducted an investigation by taking 30 students as his participants and found them to have an average IQ of 103.34. Based on the results, can we confirm the claim of the registrar? Use 1% level of significance.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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3. The registrar of a certain school claimed that the average IQ of their students is 105 with a standard deviation of 4.5. To verity the validity of the statement made by the researcher, a psychology student conducted an investigation by taking 30 students as his participants and found them to have an average IQ of 103.34. Based on the results, can we confirm the claim of the registrar? Use 1% level of significance. 3
Transcribed Image Text:3. The registrar of a certain school claimed that the average IQ of their students is 105 with a standard deviation of 4.5. To verity the validity of the statement made by the researcher, a psychology student conducted an investigation by taking 30 students as his participants and found them to have an average IQ of 103.34. Based on the results, can we confirm the claim of the registrar? Use 1% level of significance. 3
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