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4 years ago

The mapping shows a relationship between input and

Mathematics

1 answer:

Alborosie4 years ago

6 0

a function can't have one input mapped to multiple outputs. this is the case for where 4 maps to -2 and 2, so remove (4, -2)

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a consumer magazine counts the number of tissues per box in a random sample of 15 boxes of No- Rasp facial tissues. The sample s

Alex

Answer:

95% confidence interval for the population variance of the number of tissues per box is [5043.11 , 23401.31].

Step-by-step explanation:

We are given that a consumer magazine counts the number of tissues per box in a random sample of 15 boxes of No- Rasp facial tissues. The sample standard deviation of the number of tissues per box is 97.

Firstly, the pivotal quantity for 95% confidence interval for the population variance is given by;

P.Q. = $\frac{(n-1)s^{2} }{\sigma^{2} }$ ~ $\chi^{2}__n_-_1$

where, $s^{2}$ = sample variance = $97^{2}$ = 9409

n = sample of boxes = 15

$\sigma^{2}$ = population variance

Here for constructing 95% confidence interval we have used chi-square test statistics.

So, 95% confidence interval for the population variance, $\sigma^{2}$ is ;

P(5.629 < $\chi^{2}__1_4$ < 26.12) = 0.95 {As the critical value of chi-square at 14

degree of freedom are 5.629 & 26.12}

P(5.629 < $\frac{(n-1)s^{2} }{\sigma^{2} }$ < 26.12) = 0.95

P( $\frac{5.629 }{(n-1)s^{2} }$ < $\frac{1}{\sigma^{2} }$ < $\frac{26.12 }{(n-1)s^{2} }$ ) = 0.95

P( $\frac{(n-1)s^{2} }{26.12 }$ < $\sigma^{2}$ < $\frac{(n-1)s^{2} }{5.629 }$ ) = 0.95

95% confidence interval for $\sigma^{2}$ = [ $\frac{(n-1)s^{2} }{26.12 }$ , $\frac{(n-1)s^{2} }{5.629 }$ ]

= [ $\frac{14 \times 9409 }{26.12 }$ , $\frac{14 \times 9409 }{5.629 }$ ]

= [5043.11 , 23401.31]

Therefore, 95% confidence interval for the population variance of the number of tissues per box is [5043.11 , 23401.31].

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3 years ago

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kow [346]

Yes I did not get a hold on you and you can see you at your place I will call him back and see what he says about it I think I have a lot to say about that and he is going on the phone and he doesn’t know how he is going on it and I was just telling him I don’t know what he is going on with him but but it’s ok if you do it I can see him in shields m.

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3 years ago

Solve for t -1(t + 8) = -7.1

umka21 [38]

The answer is t=-0.9

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3 years ago

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The question is on file.

Nikitich [7]

Answer:

Scrambled Eggs | 6 | 9 | 12 |

Hard Boiled Eggs | 2 | 4 | 6 |

Step-by-step explanation:

Scrambled Egg = Scrambled Egg + 3

Hard Boiled Egg = Hard Boiled Egg + 2

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3 years ago

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EMERGENCY!!! (WILL GIVE BRAINLIEST)

algol [13]

He walked 5 miles.

$5x+60y=35$
$x+y=1.5$

Solutions (via elimination or substitution) are:
$x=1$
$y=.5$

x is the number of hours he spent walking, and 5x is the number of miles he walked. $5x=5(1)=5$ . He walked for 5 miles.

y is the number of hours he spent on the bus, and 60y is the number of miles he rode on the bus. $60y=60(.5)=30$ . He rode the bus for 30 miles.

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3 years ago