1. The Starlighter is a new brand of torch.  It is known that the brightness, in lumens, of the light emitted from a Starlighter follows a normal distribution with a standard deviation of 15 lumens.  Annie, a salesperson, claims that the population mean brightness of a Starlighter is greater than 110 lumens.  To test her claim, the null hypothesis ${H}_{0}∶ \mu =110$ is used with a 5% level of significance.

Write down a suitable alternative hypothesis to test Annie’s claim.