Mathematics, 22.02.2020 09:40 tyrianadonelson

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Answer from: stephany94

(a) See the table below

How many men were 30 and younger than 30: 6How many men did not have facial hair: 5

(b) See the table below

Explanation:

(a) Create a two-way table of the data

Count the number of men in each group

1, 9, 10, and 12: 30 and younger, Yes.2, and 4: 30 and younger, No6, 7, and 11: Older than 30, Yes3, 5, and 8: Older than 30, No

Put the information in the two-way table:

Has Facial Hair No Facial Hair Total

Older than 30 3 3 6

30 and younger 4 2 6

Total 7 5 12

i) Of the men surveyed how many were 30 and younger?

Read the total of the second row: 6

ii) Of the men surveyed how many men did not have facial hair:

Read the total of the second column: 5

(b) Create a two way relative frequency table that displays the relative frequencies

Determine each relative frequency divide each cell by the total number of men of the sample, 12:

First row with first column: 3/12 = 0.250First row with second column: 3/12 = 0.250First row with third column: 6/12 = 0.500Second row with first column: 4/12 = 0.333Second row with second colum: 2/12 = 0.167Second row with third column: 6/12 = 0.500Third row with first column: 7/12 = 0.583Third row with second column: 5/12 = 0.417Third row with third column: 12/12 = 1.000

Put the relative frequencies in the table:

Has Facial Hair No Facial Hair Total

Older than 30 0.250 0.250 0.500

30 and younger 0.333 0.167 0.500

Total 0.583 0.417 1.000

This is a conditional probability. You must divide the relative frequency in the intersection of the men older than 30 and has facial hair, which is 0.250 by the relative frequency of total men older than 30, which is 0.500.

Thus, this is 0.250/0.500 = 0.500.

Now, convert to percent: 0.500 = 50.0%

Answer from: Quest

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

Very urgent! for the figures below, assume they are made of semicircles, quarter circles and square

Answer from: Quest

srry idk

step-by-step explanation:

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