10) A competency test has scores with a mean of 255 and a standard
1 answer:
Answer:
The percentage of scores higher than 72 is 99.85%
Explanation:
The empirical rule states that about 68% of observations falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ)
We can use the relationship below
255-σ(61)=72
61σ=255-72
61σ=183
σ=3
The area is as shaded below
The percentage of scores higher than 72 is 99.7%+0.15%=99.85%
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Since purchasing new gear will reduce cash flow by $5,000, the corporation should keep its old equipment, and the calculation can be defined as follows:
<h3 /><h3>Calculating the Total decrease in net income:</h3>The following are the costs if the company keeps the old equipment:
$30,000 x 3 years = $90,000 So, the total cost is $90,000.
The following are the costs if the company purchases new equipment:
Calculating the equipment cost that is
$75,000 - $10,000 = $65,000.
$10,000 x 3 years = $30,000. So, the total cost is $95,000.
Find out more about the total decrease in net income here: here:brainly.com/question/10955397