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3 years ago

Find the unit rate kenny reads 5/8 pages in 2/3 minutes

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

4 0

.9375 pages / 1 minute

or 15/16 pages for every 16/16 minute.

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What 281, 480,100 in word form

gregori [183]

Two hundred eighty one million four hundred eighty thousand one hundred

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3 years ago

Solve for t in terms of q, r, and s.<br> r = sqt<br> t=

mars1129 [50]

Answer:

t=r/(sq)

Step-by-step explanation:

r=sqt

=> r/(sq)=t

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2 years ago

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Square root of 69x420

kirza4 [7]

69 • 420 = 28,980

√29980 = 173.15

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2 years ago

To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and find

loris [4]

Answer:

Option D - $[0.12$

Step-by-step explanation:

Given : The manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s=0.16.

To find : The 95% confidence interval for the population standard deviation sigma?

Solution :

Number of sample n=19

The degree of freedom is Df=n-1=19-1=18

The standard deviation of the sample is s=0.16

Applying chi-square table to find critical value,

Upper critical value of $\chi^2$ is $UC=\chi(\frac{0.05}{2},18) = 31.5264$

Lower critical value of $\chi^2$ is

$LC=\chi(1-\frac{0.05}{2},18) = 8.2307$

Lower limit of the 95% confidence interval for the population variance

$L=\frac{(df)\times (s^2)}{UC}$

$L=\frac{18\times (0.16^2)}{31.5264}$

$L=\frac{18\times0.0256}{31.5264}$

$L=\frac{0.4608}{31.5264}$

$L=0.0146$

Upper limit of the 95% confidence interval for the population variance

$U=\frac{(df)\times(s^2)}{LC}$

$U=\frac{18\times (0.16^2)}{8.2307}$

$U=\frac{18\times0.0256}{8.2307}$

$U=\frac{0.4608}{8.2307}$

$U=0.0559$

So, The 95% confidence interval for the population variance is [0.0146, 0.0560]

Now, The 95% confidence interval for the population standard deviation is

$[\sqrt{0.0146}$

$[0.1208$

or $[0.12$

Therefore, Option D is correct.

The 95% confidence interval for the population standard deviation is $[0.12$

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2 years ago

Which statement is true?

Karo-lina-s [1.5K]

Answer:

A parallelograms are rectangles

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2 years ago

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