Answer:
about 68% of brand x’s batteries have a lifespan between 95.2 hours and 108.8 hours. about 68% of brand y’s batteries have a lifespan between 98.6 hours and 101.4 hours. the life span of brand y’s battery is more likely to be consistently close to the mean.
Explanation:
According to the empirical rule (68–95–99.7 rule) for a normal distribution, 68% of the data falls within the first standard deviation (μ ± σ).
Given for brand x, mean (μ) = 102 hours and standard deviation (σ) = 6.8 hours.
first standard deviation (μ ± σ) = 102 ± 6.8 = (95.2, 108.8)
about 68% of brand x’s batteries have a lifespan between 95.2 hours and 108.8 hours.
Given for brand y, mean (μ) = 100 hours and standard deviation (σ) = 1.4 hours.
first standard deviation (μ ± σ) = 100 ± 1.4 = (98.6, 101.4)
about 68% of brand x’s batteries have a lifespan between 98.6 hours and 101.4 hours.
Since the standard deviation of brand y is smaller than that of brand x, brand y battery is more likely to be consistently close to the mean
Answer:
Please find attached file for complete answer solution and explanation of same question.
Explanation:
Answer: Option (B)
Explanation:
Fiat money is referred to as the currency which tends to have no intrinsic value and thus has been further entrenched as money. This process is often carried out by the federal government. This particular type of money does not tend to have the use of value, and only has the value since the authority i.e. the government tends to maintains its value.
Answer:
C)
Explanation:
I'm not too sure but I think they can all change really depending on the circumstances. hope that helped!
Answer: A. Fewer new businesses were started in 2010 than in other years
Explanation:
