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Artyom0805 [142]
3 years ago
13

Randomly selected statistics students of the author participated in an experiment to test their ability to determine when 60 sec

onds had passed. Forty students yielded a sample mean of 58.3 seconds. Assume that б = 9.5 seconds. Construct a 95% confidence interval of the population mean of all statistics students.
Z D/2 = 1.96
Mathematics
1 answer:
Zanzabum3 years ago
8 0

Answer:

The answer would be: We are 95% confident that the interval from 55.4 seconds to 61.2 seconds actually does contain the true value of μ.

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How many solutions does 17.75x + 24 = 18.95x + 18 have?
iren2701 [21]

Answer: Simplifying

17.75x + 24 = 18.95x + 18

Reorder the terms:

24 + 17.75x = 18.95x + 18

Reorder the terms:

24 + 17.75x = 18 + 18.95x

Solving

24 + 17.75x = 18 + 18.95x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-18.95x' to each side of the equation.

24 + 17.75x + -18.95x = 18 + 18.95x + -18.95x

Combine like terms: 17.75x + -18.95x = -1.2x

24 + -1.2x = 18 + 18.95x + -18.95x

Combine like terms: 18.95x + -18.95x = 0.00

24 + -1.2x = 18 + 0.00

24 + -1.2x = 18

Add '-24' to each side of the equation.

24 + -24 + -1.2x = 18 + -24

Combine like terms: 24 + -24 = 0

0 + -1.2x = 18 + -24

-1.2x = 18 + -24

Combine like terms: 18 + -24 = -6

-1.2x = -6

Divide each side by '-1.2'.

x = 5

Simplifying

x = 5



Step-by-step explanation:

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3 years ago
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Anettt [7]

Answer:

7

Step-by-step explanation:

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6 0
3 years ago
I don't get it at all like I just need help
Bad White [126]
Surface area: 736

Reason:
4 0
2 years ago
What is the percentage of 13/16
Fed [463]
13/16= 0.8125

Hope this helps!
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Read 2 more answers
What is the product of 4xy and y2 + 2x?
juin [17]
The product of 4xy and y² + 2x can also be written as
4xy(y² + 2x)

When we have brackets like this, we multiply whatever is left of the brackets by everything inside.

1) 4xy multiplied by y²
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2) 4xy multiplied by 2x
    4xy x 2x = 8x²y

3) Add together 4xy³ and 8x²y 
    4xy³ + 8x²y
3 0
3 years ago
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