Question

The diagram shows the ratio of teeth on the larger and smaller gears of Nash's fishing reel. A tape diagram showing 6 parts labeled "larger gear" and 1 part labeled "smaller gear" Based on the ratio, how many teeth are on the smaller gear if there are 72 teeth on the larger gear?

Answer 1

.84% of a contractor’s jobs involves electrical work. 75% of a contractor’s jobs involve plumbing work. Of the jobs that involve plumbing, 90% of the jobs also involves electrical work.

Let E = jobs involving electrical work

L = jobs involving plumbing work

Suppose one of the contractor’s jobs is randomly selected.

Using the sixth Excel worksheet,

a) Find P(E). 0.84

b) Find P(L). 0.75

c) In words, what does E | L mean?

d) Find P(E | L).

e) Find P(E and L).

f) Are E and L independent events? Why or why not?

g) Find P(E or L).

h) Are E and L mutually exclusive? Why or why not ?

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Answer 2

Answer:

Step-by-step explanation:

84% of a contractor’s jobs involves electrical work. 75% of a contractor’s jobs involve plumbing work. Of the jobs that involve plumbing, 90% of the jobs also involves electrical work. Let E = jobs involving electrical work L = jobs involving plumbing work Suppose one of the contractor’s jobs is randomly selected. Using the sixth Excel worksheet, a) Find P(E). 0.84 b) Find P(L). 0.75 c) In words, what does E | L mean? d) Find P(E | L). e) Find P(E and L). f) Are E and L independent events? Why or why not? g) Find P(E or L). h) Are E and L mutually exclusive? Why or why not