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mash [69]
3 years ago
7

HELP!!!!! HELP!!!! HELP!!!!! PLEASE!!!

Mathematics
1 answer:
sashaice [31]3 years ago
8 0

Answer:

B is the answer. Just substitute 14 in for x.

Step-by-step explanation:

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the total number of tourists to an amusement park in the past year is 12,000,000 when rounded to the nearest million.The number
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Gordon purchased a television when his local electronics store had a sale. The television was offered at 30% off its original pr
mart [117]

Answer:

$330,4

Step-by-step explanation:

$472-30/100*$472 = $330,4

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What is the rate change of the linear function that has a graph that passes through the points (2,9) (-1,3)
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8 0
3 years ago
Most soybeans grown in the United States are genetically modified to, for example, resist pests and so reduce use of pesticides.
garri49 [273]

Answer:

Interval [0.67;0.95]

Step-by-step explanation:

Hello!

You need to estimate the population proportion of grain-handling facilities that detect GM beans in shipments with a confidence interval.

The formula you have to use is:

^ρ±Z_{1-\alpha/2} * √(^ρ*(1-^ρ)/n)

where ^ρ represents the sample proportion

^ρ= x/n = 17/21 = 0.809 ≅ 0.81

Confidence level 90%

Z_{1-0.0.05} = Z_{0.95} = 1.64

Interval

0.81±1.64 * √((0.81*0.19)/21)

0.81±0.140

[0.67;0.95]

With a confidence level of 90% you'd expect that the interval [0.67;0.95] contains the population proportion of grain-handling facilities that detect GM beans in shipments.

Remember:

The confidence level of an interval is the probability under which it is built. This probability indicates that if they build 100 confidence intervals, we expect 90 to contain the value of the population mean we are trying to estimate.

The bigger the confidence level, the bigger is the chance that it contains the estimated parameter, but then again, if you were to study the whole population there is no chance you'll miss the parameter.

The smaller the confidence level, there are fewer chances that it will contain the estimated parameter, but if it does, the estimation would be more accurate than with a bigger level.

You can think it like this, a shooter that hits the target at a distance of 5 meters (low confidence level) is way better than a shooter that hits the target at a distance from 20 cm (high confidence level)

90% Confidence level is acceptable enough to have an accurate estimation of the population parameter.

I hope it helps!

8 0
3 years ago
Help please with his if you don't mind!!!!!
FrozenT [24]
Job one pays more. the rate is 18.75
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2 years ago
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