Kim wants to watch • • • Star Factor with the children the News and Weather a film when the children are in bed. The children will go to bed at 9 pm. She knows this takes 30 minutes. Kim wants to eat the meal and clear up before Star Factor. She plans to phone for the meal 1 hour and 45 minutes before Star Factor. (a) Make a time plan for Kim. Remember to check your time plan.

The z-score of a male bird of this species with a weight of 29.37 grams is 1.7.

Step-by-step explanation:

We are given that the weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation of 1.1 grams.

Let X = weights of adult male birds of a certain species

So, X ~ Normal()

The z score probability distribution for normal distribution is given by;

                                 Z =  ~ N(0,1)

where, = population mean weight = 27.5 grams

            = standard deviation = 1.1 grams

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

SO, the z-score of a male bird of this species with a weight of 29.37 grams is given by;

          Z score =   =

                                    =  1.7