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Marta_Voda [28]
3 years ago
13

Jake heard that spinning—rather than flipping—a penny raises the probability above 50\%50%50, percent that the penny lands showi

ng heads. He tests this by spinning 101010 different pennies 101010 times each, so he's willing to treat these spins as a random sample. In his 100100100 spins, the penny landed showing "heads" in 686868 spins. He wants to use these results to test H_0: p=0.50H
0
​
:p=0.50H, start subscript, 0, end subscript, colon, p, equals, 0, point, 50 versus H_\text{a}: p>0.50H
a
​
:p>0.50H, start subscript, start text, a, end text, end subscript, colon, p, is greater than, 0, point, 50, where ppp is the true proportion of spins that a penny would land showing "heads".
Assuming that the conditions for inference have been met, calculate the test statistic for Jake's significance test.
Mathematics
1 answer:
mamaluj [8]3 years ago
3 0

Answer:

3.60

Step-by-step explanation:

Kahn Academy

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Simplify each expression.
lutik1710 [3]

Answer:

1. 80

2. 18.9

3. 7

4. 146

5. 2

6. 4

Step-by-step explanation:

1. 6+4=10

10×8=80

2. 3.6×4.5= 16.2

16.2+2.7= 18.9

3. 3+2=5

5×2= 10

17-10=7

4. 4×3=12^2

12×12=144

144+2= 146

5. 3+2=5

5×6=30

30÷15=2

6. 5×2= 10

40÷10=4

4 0
3 years ago
Write an equation for the line parallel to the line 5/8x−7/6y =2 through the point (7,−1).
LiRa [457]

y =  -  \frac{28}{48x - 15} -  \frac{125}{321}is the answer.

Step-by-step explanation:

For this question,

•<u> </u><u>First</u>, find the slope of the line parallel to the line 5/8x−7/6y=2 :-

m =  - \frac{28}{ - 15 + 48x}

•<u>Second</u>, find the equation of the line,

y =  -  \frac{28}{48x - 15} -  \frac{125}{321}

7 0
2 years ago
In 2002, the Bookstore sold 1000 paperback books and 1500 hardback books. In 2003, the store sold 15% more paperback books and 5
ratelena [41]
Given:
2002 sold 1000 paperback books and 1500 hardback books for a total of 2,500 books.

2003 sold 15% more paperback books and 5% more hardback books.
1000 x 1.15 = 1,150 paperbacks
1500 x 1.05 = 1,575 hardbacks

1150 + 1575 = 2,725

2,725 - 2,500 = 225
225 / 2,500 = 0.09
0.09 x 100% = 9%  choice C

7 0
3 years ago
Harriet has $616 to buy desks for a new office. She needs 15 desks in all, and decides to buy 2 types of desks. Type A desks cos
nikdorinn [45]

Harriet can buy 7 of type a and 8 of type b

3 0
4 years ago
Joel maps his house and his school on a coordinate grid where each unit is 1 block. His school is at (-7, -2). His house is at (
zhenek [66]

Answer:

10 blocks

Step-by-step explanation

check the image attached, the y coordinate of  his school and house are the same that is, -2 so all we have to do is check the distance between x coordinates

that is , -7 and 3

distance between school and his house = 3 - (-7) = 10 blocks

3 0
3 years ago
Read 2 more answers
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