Answer:
The standard deviation of 75 dollars
Explanation:
Standard deviation, S.D.= 75 dollars; Mean, M= 225 dollars; Mean deviation, D= ?
S.D. = √ D² - M
∴ 75 = √ D² - 225
D² = 75² - 225 = 5625 + 225 = 5950
∴ D = √5950 = 24.4 dollars
From the above, it shows that, the standard deviation of 75 dollars contains the middle 95 percent of hourly sales.
Answer:
The answer is: B) The statement is false. A decrease in the price of digital cameras would decrease the demand for non-digital cameras, but a decrease in the price of non-digital cameras would not cause the demand for non-digital cameras to decrease.
Explanation:
Suppose we are not currently living in 2019, instead we are back 12 years to 2007 (before the iPhone). Back then , digital cameras were still used by common "unprofessional" users. Digital cameras were an improvement compared to non-digital cameras, so the price of non-digital cameras were much lower than their digital counterparts.
If the price of digital cameras decreased, then the price of non-digital cameras would decrease also. For example, if luxury car companies like Mercedes Benz started selling sedan cars for $20,000, Ford and Chevrolet would be forced to lower the price of their cars since they wouldn't be able to compete with MB at the same price.
But a decrease in the price of non-digital cameras would never decrease their demand. Something else would have caused that decrease. Probably digital cameras became so cheap that everyone could afford one and since they were so much better than non-digital cameras, people simply stopped buying non-digital cameras.
Answer:
If she earned $10,000 over the past 10 years, then the profit-sharing award represents 2.5% of her annual salary
But if she earned $10,000 only in one year, then the profit-sharing award represents the 25% of her annual salary
Explanation:
If she earned $10,000 over the past 10 years, and we suppose that all payments are equal, then each year she received $1000.
What percentage of her annual salary ($40,000) $1000 represents?
$1000/$40,000=0,025*100= 2.5%
But if she earned $10,000 in one year, then:
$10,000/$40,000= 0,25*100=25%
