please show work so I know how to do it

7) Woody is concerned that the number of toys in Al's Toy Barn that know they are just toys is declining. He knows that five years ago, the proportion was 0.85. He conducts a sample of 78 toys and nd that 57 ofthem know they are just toys while the other 21 believe they are real people. This means that the sample proportion is 0.73. a. Write down the parameter of interest in words and in context with the proper symbol. (2 points) b. Test Woody's claim at the 0.01 significance level. Show all six steps of the test, including an interpretation. (8 points)