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Lelechka [254]
3 years ago
12

worker a earns $7.90 per widget produced, produces 14 widgets per day, and works 10 hours per day. Worker b earns $9.00 per widg

et produced, produces 11 widgets pr day, and works 6 hours per day. which of these statements is true?
Mathematics
1 answer:
Anni [7]3 years ago
3 0
What are the statements 
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25 scores from all of the students who took the test. She sees that the mean score is 134 with a standard deviation of 6.0547. T
Tomtit [17]

Answer:

WE fail to reject the Null and conclude that ; Standard deviation of test hasn't decreased.

Step-by-step explanation:

The hypothesis :

H0 : σ = 13

H1 : σ < 13

Using the Chisquare Square statistic :

χ² = (n-1)*s²/σ²

Sample size, n = 25

s² = 6.0547²

σ² = 13²

χ² = (25 - 1)*6.0547² / 13²

χ² = 879.82541016 / 169

χ² = 5.206

The degree of freedom, df = 25 - 1 = 24

The Pvalue(5.206, 24) = 0.99981

Reject H0, if Pvalue < α ;

Since Pvalue > α ; WE fail to reject the Null and conclude that ; Standard deviation of test hasn't decreased.

7 0
3 years ago
Simplify the expression to a + bi'form:<br> (1 - 5i)(5 +6i)
lions [1.4K]

(1 - 5i)(5 + 6i) \\  = 5 + 6i - 25i - 30 {i}^{2}  \\  = 5 - 19i + 30 \\  = 35 - 19i

I hope I helped you^_^

7 0
2 years ago
Read 2 more answers
What is the square root of 289??
professor190 [17]

Answer:

square root of 289 is

<h2><em><u>1</u></em><em><u>7</u></em></h2>

Step-by-step explanation:

hope that will help you

6 0
3 years ago
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Complete the equation of the line through (1,4)(1,4)left parenthesis, 1, comma, 4, right parenthesis and (2,2)(2,2)left parenthe
Ivahew [28]

Answer:

y = -2x + 6

Step-by-step explanation:

Given

(x_1,y_1) = (1,4)

(x_2,y_2) = (2,2)

Required

Determine the line equation

First, we calculate the slope (m) using

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{2-4}{2-1}\\

m = \frac{-2}{1}

m = -2

The equation is then calculated using:

y - y_1 = m(x - x_1)

y - 4 = -2(x - 1)

Open bracket

y - 4 = -2x + 2

y = -2x + 2 + 4

y = -2x + 6

5 0
2 years ago
Read 2 more answers
6x - 2(x + 2) &gt; 2 - 3(x+3)<br><br>Solve the inequality <br><br>plz help ​
Mumz [18]

Answer:

x > -3/7

Step-by-step explanation:

6x - 2(x + 2) > 2 - 3(x + 3)

Distribute the two and three inside the parenthesis.

6x - 2x - 4 > 2 - 3x - 9

Combine like terms.

4x - 4 > -3x - 7

Add 4 to both sides.

4x > -3x - 3

Add 3x to both sides.

7x > -3

Divide both sides by 7.

x > -3/7

7 0
3 years ago
Read 3 more answers
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