Answer:
- 0.26
- 0.91
- 1.43
Step-by-step explanation:
given data
mean = 1.9 hours
standard deviation = 0.3 hours
solution
we get here first random movie between 1.8 and 2.0 hours
so here
P(1.8 < z < 2 )
z = (1.8 - 1.9) ÷ 0.3
z = -0.33
and
z = (2.0 - 1.9) ÷ 0.3
z = 0.33
z = 0.6293
so
P(-0.333 < z < 0.333 )
= 0.26
so random movie is between 1.8 and 2.0 hours long is 0.26
and
A movie is longer than 2.3 hours.
P(x > 2.3)
P( > )
P (z > )
P (z > 1.333 )
= 0.091
so chance a movie is longer than 2.3 hours is 0.091
and
length of movie that is shorter than 94% of the movies is
P(x > a ) = 0.94
P(x < a ) = 0.06
so
P( < )
a = 1.43
so length of the movie that is shorter than 94% of the movies about 1.4 hours.
Answer:
The expected number of children to attend the concert is 143.
Step-by-step explanation:
The total guest expected to attend the concert = 200
Here, Ratio of Adults: Children = 2: 5
Let us assume the common factor in the given ratio = m
So, the expected number of adults to attend the concert = 2 m
Also, the expected number of children to attend the concert = 5 m
Number of (Adults + Children) attending concert = 200
⇒ 2 m + 5 m = 200
or, 7 m = 200
or, m = 200 /7 = 28.57
or, m = 28.57
Now, the expected number of children to attend = 5 m
= 5 x 28.57 = 142.85 ≈ 143
Hence, the expected number of children to attend the concert is 143.
Multiply the amount raised by 280%
Rewrite 280% as a decimal by moving the decimal point 2 places to the left
280%. = 2.80
400 x 2.80 = $1120.00
Answers are:
The answer will be greater than $400 because 280 is greater than 100.
(100)(4) = 400, so (280)(4) = the amount of money the carnival raised on Friday.
The carnival raised $1,120 on Friday.
Check the picture below.
notice, both angles are lying on a flat-line, surely you'd know what "x" is then.
Answer:
192
Step-by-step explanation:
If there are 8 players on a team, and a total of 24 teams, you will need to multiply 8 x 24 to find the answer.
8 x 24 = 192 players can sign up for the league.
(hope this helps can i plz have brainlist :D hehe)