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goldenfox
11 days ago
10

Management of Melodic Kortholt Company compared absenteeism rates in two plants on the third Monday in November. Of Plant A's 80

0 employees, 120 were absent. Of Plant B's 1200 employees, 144 were absent. MegaStat's results for a two-tailed test are shown belowManagement of Melodic Kortholt Company compared absenteeism rates in two plants on the third Monday in November. Of Plant A's 800 employees, 120 were absent. Of Plant B's 1200 employees, 144 were absent. MegaStat's results for a two-tailed test are shown below.p1 p20.15 0.12 p (as decimal)120/800 144/1200 p (as fraction)120. 144. X800 1200 n0.03 sample difference0.00 hypothesized difference0.01545 std. errorx.xx z.0522 p-value (two-tailed)The test statistic (shown as z = x.xx) is approximately:A. 2.022B. 1.960C. 1.942D. 1.645
Mathematics
1 answer:
babunello [11.3K]11 days ago
5 0

Response: C. 1.942

Detailed explanation:

This analysis involves comparing two population proportions. The rate of absenteeism among employees in plant A and plant B is denoted by p1 and p2 respectively.

From the provided data,

p1 = 0.15

p2 = 0.12

n1 = 800

n2 = 1200

To find the z score, we start by calculating the pooled proportion.

The pooled proportion, pc is

pc = (x1 + x2)/(n1 + n2)

pc = (120 + 144)/(800 + 1200) = 0.132

1 - pc = 1 - 0.132 = 0.868

The z score formula is

z = (p1 - p2)/√pc(1 - pc)(1/n1 + 1/n2)

z = (0.15 - 0.12)/√(0.132)(0.868)(1/800 + 1/1200) = - 0.03/0.045

z = 1.942

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Benjamin decides to treat himself to breakfast at his favorite restaurant. He orders chocolate milk that costs \$3.25$3.25dollar
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Complete question:

Benjamin treats himself to breakfast at his go-to restaurant. He orders chocolate milk priced at \$3.25$3.25dollar sign, 3, point, 25. Next, he aims to purchase as many pancake stacks as possible while keeping his total at or below \$30$30dollar sign, 30 prior to tax. Pancakes are sold in stacks of 4 at \$5.50$5.50dollar sign, 5, point, 50. Let SSS denote the number of pancake stacks purchased by Benjamin. 1) What inequality represents this situation?

Answer:

Refer to the explanation below.

Step-by-step explanation:

Information provided:

Chocolate milk costs = $3.25

Price of pancake stack = $5.50 (for 4 pancakes)

Pancake stacks bought = S

Maximum spending ≤ $30

Chocolate milk cost + (Cost per pancake stack × number of stacks) ≤ $30

3.25 + 5.50S ≤ 30

5.50S ≤ 30 - 3.25

5.50S ≤ 26.75

S ≤ 26.75 / 5.50

S ≤ 4.86

Therefore, the maximum number of pancake stacks he can buy without going over budget is 4.

Thus, total pancakes = stacks × pancakes per stack

= 4 × 4

= 16

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1 month ago
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Response:

(6,-8).

Detailed explanation:

We have a set of equations provided. Our task is to find the solution for this system.

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12-6x-x=x-x-30

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