9.  Moisture Content of Fruits and Vegetables

Listed below is the moisture content (by percent) for

random samples of different fruits and vegetables. At the 0.05 level of significance, can it be concluded that fruits differ from vegetables in average moisture content?

Apricot 86 Artichoke 85 Banana 75 Bamboo shoots 91 Avocado 72 Beets 88 Blackberry 88 Broccoli 89 Clementine 87 Cucumber 95 Fig 79 Iceberg lettuce 96 Pink grapefruit 92 Mushroom 92 Mango 84 Radish 95     Tomato 94

Fruits                                       Vegetables

 

 

Source: Pittsburgh Tribune-Review.

5. Ages of Homes Whiting, Indiana, leads the “Top 100 Cities with the Oldest Houses” list with the average age of houses being 66.4 years. Farther down the list resides Franklin, Pennsylvania, with an average house age of

59.4 years. Researchers selected a random sample of 20 houses in each city and obtained the following statistics. At a = 0.05, can it be concluded that the houses in Whiting are older? Use the P-value method.

                                             Whiting           Franklin

Mean age                          62.1 years        55.6 years

Standard deviation           5.4 years           3.9 years

Source: www.city-data.com