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3 years ago

Laura buys an unfair coin online. The coin is supposed to land heads up 75% of the time. If this is true, what is the

Mathematics

1 answer:

Archy [21]3 years ago

4 0

Answer:

C . (0.75) 15 x (0.25) 5

Step-by-step explanation:

Took the assignment in edge, it’s right

Its based off of the rule P(A and B) = P(A) x P(B) from multiplication rule for independent events.

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Can i please get help with this

MatroZZZ [7]

Answer:

1. D

2.C

3. A

4.B

Step-by-step explanation: hehe ur welcome

4 0

3 years ago

Read 2 more answers

It’s been found that 85% of American adults suffer from triskaidekaphobia (fear of the number 13). Researchers think this is too

uysha [10]

Answer:

Null Hypothesis, $H_0$ : p $\leq$ 85%

Alternate Hypothesis, $H_A$ : p > 85%

Step-by-step explanation:

We are given that it's been found that 85% of American adults suffer from triskaidekaphobia (fear of the number 13).

A USA Today/Gallup poll asked 1,006 randomly selected people 18 years old and older in telephone interviews "Suppose you checked into a hotel and were given a room on the thirteenth floor. Would this bother you or not?" 87% of the survey respondents answered they would be bothered.

Let p = proportion of respondents who would be bothered about given a room on the thirteenth floor

SO, Null Hypothesis, $H_0$ : p $\leq$ 85%

Alternate Hypothesis, $H_A$ : p > 85%

Here, null hypothesis states that the proportion of respondents who would be bothered about given a room on the thirteenth floor is less than or equal to 85%.

On the other hand, alternate hypothesis states that the proportion of respondents who would be bothered about given a room on the thirteenth floor is more than 85%.

Hence, this would be the correct null and alternative hypothesis.

6 0

3 years ago

PLEASE HELP ME! What is 0.00364 in scientific notation?

Helen [10]

3.64 × 10^3
Hope this helps
multiply by 10, 3 times because you move the decimal 3 times
The ^ is an exponet

8 0

3 years ago

Evaluate: 2a + 4b when a = 10 & b = 6

Tcecarenko [31]

Answer: Option C: 44

Step-by-step explanation:

so, here we have the equation:

H(a,b) = 2a + 4b

"evaluate" means change the values of the variables for specific values, here we must replace the "a" for 10, and the "b" for a 6.

So we have:

H(10, 6) = 2*10 + 4*6 = 20 + 24 = 44

7 0

3 years ago

A neighborhood was given a vacant lot in the shape of a rectangle on which to build a park. The base of the lot is 72.2 feet and

Darya [45]

Answer:

We are given a rectangular lot with dimensions 72.2 feet long and 50 feet wide.

1. To find the size of the park, we need to find the AREA of the rectangular lot.

Area of a rectangle = Length × Width

i.e. Area of a lot = 72.2 × 50

i.e. Area of a lot = 3610 feet²

Thus, the size of the park is 3610 feet².

2. To find the amount of fencing needed, we need to find the PERIMETER of the rectangular lot.

Perimeter of rectangle = 2 × ( Length + Width )

i.e. Perimeter of the lot = 2 × ( 72.2 + 50 )

i.e. Perimeter of the lot = 2 × 122.2

i.e. Perimeter of the lot = 244.4 feet.

Thus, the amount of fencing needed for the park of the park is 244.4 feet.

7 0

3 years ago

Read 2 more answers