The null hypothesis and hypothesis differ in that the null aligns with the claim or value of the population parameter. The alternative hypothesis tries to negate the null hypothesis by trying to displace the claim set by the parameter based on the average or mean value of the sample.
Since the claim Given by the population mean is that mean weight is less Than 186 ; then this will be the null hypothesis and an opposite statement will be declared as the alternative.
The probability of randomly picking one of those dishes is <span><span>8</span></span><span> out of </span><span><span>20</span></span><span>, or 8/20. We can simplify that down to 2/5. </span>