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lesya692 [45]
3 years ago
12

Find the 90% confidence interval for the standard deviation for the time it takes an inspector to check a bus for safety if a sa

mple of 27 buses has a standard deviation of 6.8 minutes. assume the variable is normally distributed.
Mathematics
1 answer:
Aleks04 [339]3 years ago
7 0
<span><span> - </span>Find the 90% confidence interval for the standard deviation for the time it takes aninspector to check a bus for safety if a sample of 27 buses has a standard deviation of 6.8 minutes.Assume the variable is normally distributed. ... Best Answer: Let X be the time it takes an inspector tocheck a bus n = 27</span><span>[PDF]<span>Setiio/t 7. </span></span>
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The number of compact discs N purchased each year, in millions, can be
Aleonysh [2.5K]

Answer:

126.5 years

Step-by-step explanation:

N(t) = 384(1.13)^t

2,000,000,000 = 384(1.13)^t

(1.13)^t = 2,000,000,000/384

log [(1.13)^t) = log (2,000,000,000/384)

t × log 1.13 = log (2,000,000,000/384)

t = [log (2,000,000,000/384)]/(log 1.13)

t = 126.5

8 0
2 years ago
A shipping box in the shape of a rectangular prism has the dimension shown.
pogonyaev

Answer:

18 feet³

Step-by-step explanation:

3 · 3 · 2 =

9 · 2 =

18 feet³

8 0
2 years ago
Under which condition does a country with a small GDP have a large per capita income? if it has a large population if it has a s
ratelena [41]
Per capita means per head or per person.

now, if a country has a small GDP hmmm say for the sake of example, $1000, and it has 1000 residents, then the per capita is $1000/1000 or a buck each.

now, $1000 is a really tiny GDP, but, if the population is say hmm 20 folks only, then the per capita amount is $1000/20, or $50 per person, now, that's a large "per capita" figure, more so than $1 per person, even though the GDP never changed, it was all along $1000.

so, if the population is comparitively small, the per capita is large, I think a good example of that is Switzerland.

sidenote:

bear in mind that per capita figures are very misleading, since you could have a tiny portion of the population making huge amounts and others making little, like in the US, and the per capita is very inaccurate to reflect the economy wealth distribution.
7 0
4 years ago
Read 2 more answers
A practice field is 350 feet long. The game field is 40% longer than the practice field. How long is the game field?
kifflom [539]

Answer: 490 feet

Step-by-step explanation: Since the game field is 40% longer than the practice field, it is 140% or 1.4 times the practice field. 350•1.4 is 490 feet.

8 0
2 years ago
List the base-5 numbers of the decimals 16 to 32.
zhenek [66]
18 20 22 24 26 28 30
7 0
3 years ago
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