Scores on an IQ Test Are Normally Distributed $\sigma = 17$

question 110

Multiple Choice

Scores on an IQ test are normally distributed. A sample of 17 IQ scores had standard deviation s = 23. The developer of the test claims that the population standard deviation is $\sigma = 17$ . Do these Data provide sufficient evidence to contradict this claim? Use the $\alpha = 0.01$ level of significance.

• A) Do not reject \(H _ { 0 }\) There is insufficient evidence to conclude that the population standard deviation Differs from 17.
• B) Reject \(H _ { 0 }\) . The population standard deviation appears to differ from 17.

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Definitions:

Vas Deferens

The duct that conveys sperm from the testicle to the urethra.

Spermatic Cord

A bundle of fibers and tissues in males that includes the vas deferens, blood vessels, nerves, and the cremaster muscle, responsible for supporting the testes.

Inguinal Canal

A passage in the lower anterior abdominal wall which in men, contains the spermatic cord and in women, the round ligament of uterus.

Inguinal Ligament

The inguinal ligament is a band of tissue that runs from the pubic bone to the anterior superior iliac spine, forming the lower border of the abdomen.