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Lilit [14]
3 years ago
9

Can someone please answer this question please answer it correctly please show work

Mathematics
1 answer:
netineya [11]3 years ago
7 0

Answer:

Actual mean: 223 pages

Predicted mean / estimate: 225 pages

Explanation below

Step-by-step explanation:

Mean = total amount ÷ # of numbers

155 + 214 + 312 + 198  + 200 + 170 + 250 + 260 + 215 + 256

Add

2,230

# of numbers = 10

2,230 ÷ 10 = 223

The exact mean is 223

If I were to predict the mean, I would say that a good estimation would be around 225, because I see that the highest number in the data set is 312, and the lowest is 155. If 312 is rounded down to 300, and 155 is rounded down to 150, the number exactly in the middle of 300 and 150 is 225.

Actual mean: 223 pages

Predicted mean: 225 pages

Hope this helps :)

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Esteban has a big jar in his room. He has 600 coins total, and 240 of them are pennies
Aleks [24]

Answer:

Percentage of Pennies is 40

Step-by-step explanation:

Total coins are 600

Pennies are 240

Percentage of pennies = (240/600) × 100%

= 0.4 × 100%

= 40%

3 0
3 years ago
Find the sum of 2/6 +7/6​
ladessa [460]

Answer:

your answer is 9/6, which simplifies to 3/2, or 1 1/2

Step-by-step explanation:

8 0
3 years ago
What is the simpler form of (6 + m^2) (6 -m^2)​
PtichkaEL [24]

Answer:

=36-m^4

Step-by-step explanation:

8 0
2 years ago
9. An express delivery service advertises next-day delivery of any parcel it receives before 3PM. The actual success rate is 90%
Juli2301 [7.4K]

Answer:

a) P(X =16 ) = 0.1853

b) P(X \leq 12) = 0.0684

Step-by-step explanation:

GIVEN DATA:

n = 16

p = 0.90

from relation given probabllity can be solve

P(X) = ^nC_x * p^x * ( 1 - p)^{n-x}

a)

P(X =16 ) = ^{16}C_{16} * 0.90^x * ( 1 - 0.90)^{16-16}

P(X =16 ) = 0.1853

b) P(X \leq 12) = 1 - P(X \geq 13)

= 1 - [ P(X = 13) +P(X = 14) +P(X = 15) +P(X = 16) ]

= 1 - [ ^{16}C_{13} * 0.90^{13} * (1 - 0.90)^3 +^{16}C_{14} * 0.90^{14} * (1 - 0.90)^2 +^{16}C_{15} * 0.90^{15} * (1 - 0.90)^1 +^{16}C_{16} * 0.90^{16} * (1 - 0.90)^0 ]

= 0.0684

4 0
3 years ago
Joe solved this problem on a math test. 5/6 - 1/4 = 7/8
Travka [436]

Answer:

This is incorrect, the correct answer is 7/12

Step-by-step explanation:

5 0
2 years ago
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