What is the truth value for the following conditional statement?

Mathematics

1 answer:

krok68 [10]3 years ago

3 0

The answer is TT=T because why will it be a true or false

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True or False, the chance of flipping heads on a coin 3 times in a row is 1/2

bogdanovich [222]

true flip a coin it's fifty fifty

3 0

3 years ago

Read 2 more answers

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 2643 miles, with a standard

musickatia [10]

Answer:

$P(2643-51< \bar X < 2643+51)= P(2592< \bar X$

And we can use the z scoe formula given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the limits we got:

$z = \frac{2592-2643}{\frac{368}{\sqrt{44}}}= -0.919$

$z = \frac{2694-2643}{\frac{368}{\sqrt{44}}}= 0.919$

And this probability is equivalent to:

$P(-0.919$

Step-by-step explanation:

For this case we can define the random variable X as "number of miles between services" and we know the following info given:

$\mu = 2643 , \sigma = 368$

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

We select a random sample size of n =44. And we want to find this probability:

$P(2643-51< \bar X < 2643+51)= P(2592< \bar X$

And we can use the z scoe formula given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the limits we got:

$z = \frac{2592-2643}{\frac{368}{\sqrt{44}}}= -0.919$

$z = \frac{2694-2643}{\frac{368}{\sqrt{44}}}= 0.919$

And this probability is equivalent to:

$P(-0.919$

4 0

3 years ago

Given f(x) = 3x2 − 48 and g(x) = x − 4, identify (f/g)(x).

Ratling [72]

The choose a. 3x+12

$( \frac{f}{g} )(x) = \frac{3 {x}^{2} - 48 }{x - 4} = \frac{3( {x}^{2} - 16) }{x - 4} \\ \\ = \frac{3(x - 4)(x + 4)}{x -4} \\ \\ = 3(x + 4) \\ = 3x + 12$