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zlopas [31]
2 years ago
6

(PLEASE HELP)James tosses a coin 50 times. It lands on heads 23 times and on tails 27 times.

Mathematics
1 answer:
Fudgin [204]2 years ago
6 0

Answer:

b

Step-by-step explanation:

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Answer: Required 99% confidence interval  : (48.30%, 61.7%)

Step-by-step explanation:

Confidence interval for PROPORTION:  p\pm z^* \times S.E., where p = sample proportion , z* = two-tailed critical z-value  and S.E. = standard error.

As per given: p=55%

Critical z-value for 99% confidence = 2.576

S.E. = 2.6%

Then, required confidence interval :

55\% \pm (2.576)\times 2.6\%\\\\\approx55\% \pm6.70\%\\\\=(55\%-6.70\%,\ 55\%+6.70\%)\\\\=(48.30\%,\ 61.7\%)

Required 99% confidence interval  : (48.30%, 61.7%)

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3 years ago
Use the diagram to find the value of "x" so that △AOC ≅ △ZFD by HL.
astra-53 [7]

Answer:

x= 19

Step-by-step explanation:

Is given that the <u>triangles are congruent</u> so the corresponding sides are congruent as well.

Also congruent sides are equal in measure so we use the given picture to write the equality.

2x -1 = 37, add 1 to both sides

  2x = 38 , divide both sides by 2

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8 0
3 years ago
6 2/3 * -4 1/5 i really need help
deff fn [24]

Answer:

-28

Step-by-step explanation:

6 2/3*-4 1/5=

20/3*-21/5=

4/3*-21/1=

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3 0
3 years ago
Between which two integers does square root of /10 <br> lie?
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Step-by-step explanation:

Fdfdddddhfhdhdhdhdhhdhdhdhd

6 0
3 years ago
Read 2 more answers
For an employee training, the employee to instructor ratio is 24 to 2. If there are 26 instructors for the training, how many em
denpristay [2]

Answer:

312 employees participated in the training

Step-by-step explanation:

Given;

employee to instructor ratio is 24 to 2

there are 26 instructors for the training

let the total number of instructors be I = 26

let the total number of employees be e = ?

employee to instructor ratio is 24 to 2, e : I = 24 : 2

e : I = 24 : 2  = e : 26

\frac{24}{2} = \frac{e}{26} \\\\e = 12 *26\\\\e = 312

Therefore, the total number of employees who participated in the training is 312

8 0
3 years ago
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