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IceJOKER
12 days ago
7

(PLEASE HELP ) A falcon flies 800,000 meters in 4 hours. Use the formula d = rt, where d represents distance, r represents rate,

and t represents time, to answer the following questions. Show
your work.

Part A: Rearrange the distance formula, d = rt, to solve for rate.

Part B: Find the falcon's rate in meters per hour.

Part C: Find the falcon's rate in kilometers per hour.

Part D: Which unit, meters, or kilometers, makes more sense to use in this scenario, and why?
Mathematics
1 answer:
zzz [4K]12 days ago
6 0

Answer:

r = d/t

r = 200,000 meters/hour

r = 200 kilometers/hour

km/hour is more suitable

Step-by-step explanation:

Given

A falcon travels 800,000 meters in 4 hours.

This means the distance covered is 800,000 meters.

1 km equals 1,000 meters.

Therefore, the distance in kilometers is 800,000 meters divided by 1,000, resulting in 800 km.

t equals 4 hours.

Part A: To find the rate, rearrange the formula for distance, d = rt.

d = rt

By dividing each side by t, we get d/t = r.

Thus, r = d/t

Part B: Calculate the falcon's speed in meters per hour.

d = 800,000 meters

t = 4 hours

r = 800,000 meters divided by 4 hours gives us 200,000 meters/hour.

Therefore, the speed equals 200,000 meters/hour.

Part C: Find the falcon's rate in kilometers per hour.

As established, the distance is 800 km as mentioned earlier.

Hence,

speed = 800 km divided by 4 hours gives us 200 km/hour.

Part D: Which unit, meters or kilometers, is more logical for this situation, and why?

The standard measurement of speed is

km/hour and m/sec.

That is, the choice of units is based on the scale of measurement we need; larger numbers are easier to interpret in kilometers.

Since we are dealing with a large distance, it is advisable to use km/hour.

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In this case, since the p-value exceeds the significance threshold, we have adequate evidence to FAIL to reject the null hypothesis.

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Step-by-step explanation:

1) Provided data and references

\bar X represents the average of the samples

s denotes the standard deviation of the samples

n=18 indicates the number of samples

\mu_o =10 is the value we are examining

\alpha defines the significance level for the test.

t represents the specific statistic of interest

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To assess if the true mean is at least 10 hours, we must set up a hypothesis:

Part a

Null hypothesis:\mu \geq 10

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If we consider the sample size being less than 30 and the population deviation unknown, it’s more appropriate to use a t-test to compare the actual mean with the reference value, calculated as:

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In this scenario t=-2.3, \alpha=0.05

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Since this is a left-tailed test, the p-value is determined by:

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In this instance, with the p-value being less than the significance level, we have sufficient evidence to reject the null hypothesis.

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p_v =P(t_{17}

In this case, since the p-value is above the significance level, we have enough grounds to FAIL to reject the null hypothesis.

Part d

For this case t=-3.6, \alpha=0.05

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Since we are conducting a left-tailed test, the p-value is calculated as:

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Here, with the p-value being lower than the significance threshold, we can reject the null hypothesis.

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Answer:

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Since the rounded population is 620,000 to the nearest ten thousand, the actual population could be any value with the last four digits from 0001 to 4999 (like 618,000) or from 5000 upwards (like 624,000).

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