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4 years ago

What characteristic is true for all relations that are functions?

Mathematics

1 answer:

3241004551 [841]4 years ago

7 0

Answer:

we must identify the input and the out put function,if the input value leads to be an output value it is a function.if any input leads to two or more out puts it is not a function,

Step-by-step explanation:

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90,000 +40,000+ 8,000 + 300 + 1

zavuch27 [327]

94831 is the correct answer

5 0

3 years ago

You are interested in purchasing a new car. One of the many points you wish to consider is the resale value of the car after 5 y

lys-0071 [83]

Answer:

99% confidence interval for the true mean resale value of a 5-year-old car of this model is [$12,173.24 , $13,306.76].

Step-by-step explanation:

We are given that you manage to obtain data on 17 recently resold 5-year-old foreign sedans of the same model.

These 17 cars were resold at an average price of $ 12 comma 740 with a standard deviation of $ 800.

Firstly, the pivotal quantity for 99% confidence interval for the true mean is given by;

P.Q. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample average price = $12,740

s = sample standard deviation = $800

n = sample of cars = 17

$\mu$ = true population mean

Here for constructing 99% confidence interval we have used One-sample t test statistics as we don't know about population standard deviation.

So, 99% confidence interval for the population mean, $\mu$ is ;

P(-2.921 < $t_1_6$ < 2.921) = 0.99 {As the critical value of t at 16 degree of

freedom are -2.921 & 2.921 with P = 0.5%}

P(-2.921 < $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ < 2.921) = 0.99

P( $-2.921 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X-\mu}$ < $2.921 \times {\frac{s}{\sqrt{n} } }$ ) = 0.99

P( $\bar X-2.921 \times {\frac{s}{\sqrt{n} } }$ < $\mu$ < $\bar X+2.921 \times {\frac{s}{\sqrt{n} } }$ ) = 0.99

99% confidence interval for $\mu$ = [ $\bar X-2.921 \times {\frac{s}{\sqrt{n} } }$ , $\bar X+2.921 \times {\frac{s}{\sqrt{n} } }$ ]

= [ $12,740-2.921 \times {\frac{800}{\sqrt{17} } }$ , $12,740+2.921 \times {\frac{800}{\sqrt{17} } }$ ]

= [$12,173.24 , $13,306.76]

Therefore, 99% confidence interval for the true mean resale value of a 5-year-old car of this model is [$12,173.24 , $13,306.76].

6 0

3 years ago

Please answer all components.

rosijanka [135]

Answer:

Step-by-step explanation:

¿Hablas español porque no entiendo esto? Si lo haces, ¿puedes decirme en español?

4 0

3 years ago

A card is selected at random from a pack consisting of a total of 52 cards, including 4 queens and 4 kings. The card is not repl

Anvisha [2.4K]

analyze problme

the pack has 52 cards

four kings and four queens

rest will be detonated as x

The first card is already a king, so one king is deducted from the pile

so now there is 51 cards, so

4/51 is the chance you will draw a king

6 0

3 years ago

James is opening a checking account. The bank employees do not know him personally, and he has forgotten his identification. Can

creativ13 [48]

Legally speaking? No. When you go to the bank to open up an account, you need a birth certificate, social security card, etc. There's a process to it. Many banks will not allow you to open an account without your needed information, even if they do know you personally (my mom worked at a bank...)

8 0

3 years ago

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