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3 years ago

6

WILL GIVE BRAINLIST kai has 32 he wants to put the same number of tickets into 4 boxs wich number sentence could be used to find

the number of tickets kai should put in each box
QUESTOINS:
A; 4+__=32
B; 4x__=32
C; 32-__=4
D; 32x__=4

2 answers:

kotykmax [81]3 years ago

4 0

Answer:

it is B

Step-by-step explanation:

now brainliest 5 stars and heart please

grandymaker [24]3 years ago

4 0

Answer:

IT would be B

Step-by-step explanation:

If you multiply 4 x 8 = 32 will complete the answer

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$\bar x = 260.1615$

$\sigma = 70.69$

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Step-by-step explanation:

Given

$n =20$

See attachment for the formatted data

Solving (a): The mean

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$\bar x = \frac{242.87 +212.00 +260.93 +284.08 +194.19 +139.16 +260.76 +436.72 +355.36 +.....+250.61}{20}$

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This is calculated as:

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$\sigma = \sqrt{\frac{(242.87 - 260.1615)^2 +(212.00- 260.1615)^2+(260.93- 260.1615)^2+(284.08- 260.1615)^2+.....+(250.61- 260.1615)^2}{20 - 1}}$ $\sigma = \sqrt{\frac{94938.80}{19}}$

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$c =0.95$

So:

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$\alpha = 1 -0.95$

$\alpha = 0.05$

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$df = n -1$

$df = 20 -1$

$df = 19$

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So, we have:

$X^2_{0.025} = 32.852$ ---- at $\frac{\alpha}{2}$

$X^2_{0.975} = 8.907$ --- at $1 -\frac{\alpha}{2}$

So, the confidence interval of the standard deviation is:

$\sigma * \sqrt{\frac{n - 1}{X^2_{\alpha/2} }$ to $\sigma * \sqrt{\frac{n - 1}{X^2_{1 -\alpha/2} }$

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Answer:

Step-by-step explanation:

Given,

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