Question

Claim: The standard deviation of pulse rates of adult males is less than 11 bpm. For a random sample of 169 adult males, the pulse rates have a standard deviation of 10.8 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form VVbpm (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. Ho VVbpm V bpm (Type integers or decimals. Do not round.)

Answer 1

    

Solution :

a)

Claim : $\mu$ < 11

This is the left tailed test .

The null and alternative hypothesis is ,

H₀ :   $\mu$ $\geq$ 11

H₁ : $\mu$ < 11