The point estimate for the population standard deviation of the length of the walking canes is given as the squareroot of variance. Since variance is provided as 1.9 then the standard deviation will be

$\sqrt 1.9=1.37840487520902\approx 1.38$

Therefore, rounded off to two decimal places, the standard deviation is approximately 1.38

6 0

3 years ago

Erik spends $680 for cable television service. The cable company offers a deal that promises Erik 3 free months of cable if he s

Alex777 [14]

Answer:

Step-by-step explanation:

3 0

3 years ago

FREE PTS! If there was one thing you could change in the past, what would it be?

m_a_m_a [10]

Answer:

as a german, im pretty sure everyone knows what i'll say next

4 0

3 years ago

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Find the exact value of csc ø, if cos ø= 1/9; 180° less ø less than 270°

Iteru [2.4K]

Answer:

The answer to your question is: the first option - 9/ $\sqrt{80}$

Step-by-step explanation:

Process

cosФ = adjacent side / hypotenuse

-1/9 = adjacent side / hypotenuse

adjacent side = -1 hypotenuse = 9

c² = a² + b²

b² = c² - a²

b² = 81 - 1

b = $\sqrt{80} \\$ b = opposite side

But b is negative because we are in the third quadrant.

b = - $\sqrt{80}$

Finally csc Ф = hypotenuse / opposite side

csc Ф = - 9 / $\sqrt{80}$

4 0

3 years ago