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2 years ago

A scientist records a jackrabbit traveling 140 m in 7 s.

Mathematics

2 answers:

nydimaria [60]2 years ago

7 0

Answer:

20 m/s, if that's what your asking.

Step-by-step explanation:

Crazy boy [7]2 years ago

4 0

Answer:

20m/s

Step-by-step explanation:

Distance= 140m

Time = 7s

Speed = 140/ 7= 20m/s

(If ur asking speed) if not pls delete my answer

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To find the monthly payment, we need to find the 2% of $760.

Therefore,
$760 * 2 / 100 = $15.20 > $10

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Alona [7]

Answer:

95% Confidence interval for the variance:

$3.6511\leq \sigma^2\leq 34.5972$

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$1.9108\leq \sigma \leq 5.8819$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

The sample, of size n=8, has a standard deviation of s=2.89 miles.

Then, the variance of the sample is

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The confidence interval for the variance is:

$\dfrac{ (n - 1) s^2}{ \chi_{\alpha/2}^2} \leq \sigma^2 \leq \dfrac{ (n - 1) s^2}{\chi_{1-\alpha/2}^2}$

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

$\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128$

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$\dfrac{ (8 - 1) 8.3521}{ 16.0128} \leq \sigma^2 \leq \dfrac{ (8 - 1) 8.3521}{1.6899}\\\\\\3.6511\leq \sigma^2\leq 34.5972$

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Step-by-step explanation:

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sattari [20]

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One lap around a parking lot = 3/10 mile
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