The question is incomplete. This is the complete question: Use the following information to answer the exercise: The table in the attachment contains data on hurricanes that have made direct hits on the US between 1851 and 2004. A hurricane is given a strength category rating based on the minimum wind speed generated by the storm. What is the relative frequency of direct hits that were AT MOST a category 3 storm.
The answer is b. 0.9231.
Explanation:
The relative frequency for each category can be calculated by dividing the number of hits for each category by the total number of hits, where the total number of his = 273.
The relative frequency for each category is shown in the third column in the table in the attachment.
Using the values of the respective relative frequencies on the third column, and considering AT MOST a category 3 storm―i.e. categories 1, 2, and 3―the relative frequency of direct hits = relative frequency for category 1 + relative frequency for category 2 + relative frequency for category 3 = (109/273) + (72/273) + (71/273) = 0.3993 + 0.2637 + 0.2601 = 0.9231.
Igneous is the Latin word for a rock that means fire, this is formed through the cooling and solidification of magma and lava the magma and lava form crystal on their process of cooling and hence<u> if the magma cools quickly the crystals made will be small and bigger crystal are formed when it cools slowly.</u>
It crystallizes as the natural gas comes in contact with the molten lava. These rocks also come in a variety of geological settings such as shields, platforms, orogens, basins, and extended forms of crust and oceanic crust.
Igneous rocks are thus called primary rocks and thus there are 700 known igneous rocks on earth and hence divided into two categories of rocks such us intrusive or plutonic rock being crystallized from magma beneath the surface of the earth and Extensive rocks like the volcanic rocks that are crystallised from the lava at the surface of the earth.
