The formula, P=V^2/R,gives the relationship between resistance (R), voltage (V) and power (P). Solve the formula for Voltage

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Start by multiplying both sides by R to isolate V².
V² = P·R

Now, take the square root of both sides to get V.

V = √PR

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A veterinarian collects data on the number of times race horses are raced during their careers. The veterinarian finds that the

SpyIntel [72]

Answer:

c. (12.12, 18.48)

Step-by-step explanation:

Hello!

The study variable is X: number of times a racehorse is raced during its career.

The average number is X[bar]= 15.3 and the standard deviation is S= 6.8 obtained from a sample of n=20 horses.

To estimate the population mean you need that the variable has a normal distribution, in this case, we have no information about its distribution so I'll assume that it has a normal distribution. With n=20 the most accurate statistic to use for the estimation is a Students-t for one sample, the formula for the interval is:

X[bar] ± $t_{n-1;1-\alpha /2} * \frac{S}{\sqrt{20} }$

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[15.3 ± 2.093 * $\frac{6.8}{\sqrt{20} }$ ]

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Using a significance level of 95% you'd expect that the true average of times racehorses are raced during their career is included in the interval [12.12; 18.48].

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3 years ago

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kramer

Answer:

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Step-by-step explanation:

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x/5 -3 + 3 < 5 + 3

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