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Marizza181 [45]
3 years ago
9

Deborah finds that that the theoretical probability of flipping "heads" on a fair coin was 50%. After she flipped the fair coin

100 times, she calculated that she flipped heads 45 times. what is the percent difference in theoretical and experimental probability​
Mathematics
1 answer:
nydimaria [60]3 years ago
7 0

Answer: 5% if it’s bubble sheet then 0.05

Step-by-step explanation:

Probability of flipping heads=50%

Probability of flipping practically = 45/100

=45

So 50%-45% = 5%

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About 99.7% of sixth-grade students will have
Brut [27]

Answer: About 99.7% of sixth-grade students will have

heights between <u>51.1</u> inches and <u>64.9</u> inches.

Step-by-step explanation:

According to the empirical rule, 99.7% of data falls within the three standard deviations from the mean.

Given : Mean: \mu=58\text{ inches}

Standard deviation:=  \sigma=2.3\text{ inches}

Then, the  99.7% of sixth-grade students will have  heights between

\mu-3\sigma inches and \mu+3\sigma inches

i.e. 58-3(2.3) inches and 58+3(2.3) inches

i.e. 51.1 inches and 64.9 inches.

5 0
4 years ago
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Write the equation of the line that is perpendicular to y = 7x - 3 and passes through the origin
natta225 [31]
Answer is 7y=-x for the question
3 0
3 years ago
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Please help as soon as possible!
sammy [17]
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5 0
4 years ago
Find the measure of each angle in the triangle.
makvit [3.9K]
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8 0
3 years ago
Mr. Jacobs 55 years old and tony is 7 years olds , in how many years will mr. Jacobs 4 times as old as tony ?
V125BC [204]

Call the mystery number of years ' Y ' .

In 'y' years, Mr. Jacobs will be (55+y), and tony will be (7+y).

You said that Mr. Jacobs will then be 4 times as old as tony, so . . .

                                                55 + y = 4 (7 + y)

Eliminate the parentheses:     55 + y = 28 + 4y

Subtract 28 from each side:   27 + y =         4y

Subtract 'y' from each side:    27       =         3y

Divide each side by  3 :           9       =           y

In 9 years, Mr Jacobs will be (55 + 9) = 64.
In 9 years, tony will be (7 + 9) = 16.

64 is 4 times 16, and now that tony has turned 16,
he can start spelling his name with a capital ' T ',
like a regular grown-up.           
 
5 0
3 years ago
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