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3 years ago

Can somebody help me please and thank you, this is due today. No links please!

Mathematics

1 answer:

Brrunno [24]3 years ago

8 0

Answer:

Yes

Step-by-step explanation:

Y=9x2

Y=18

So you put a dot on 18 on the vertical axis and draw a line which is horizontal.

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Final numeric grades in a certain course are normally distributed with a mean of 72.3 and a standard deviation of 6.4. The profe

Dimas [21]

Answer:

The minumum numeric grade you have to earn to obtain an A is 81.29.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 72.3, \sigma = 6.4$

The professor curves the grades so that the top 8% of students will receive an A. What is the minumum numeric grade you have to earn to obtain an A?

The minimum numeric value is the value of X when Z has a pvalue of 1-0.08 = 0.92. So it is X when Z = 1.405.

$Z = \frac{X - \mu}{\sigma}$

$1.405 = \frac{X - 72.3}{6.4}$

$X - 72.3 = 1.405*6.4$

$X = 81.29$

The minumum numeric grade you have to earn to obtain an A is 81.29.

6 0

3 years ago

Two events A and B are _______ if the occurrence of one does not affect the probability of the occurrence of the other.

igomit [66]

Answer:

Independent

Step-by-step explanation:

From the word independent, which means being able ot stand alone, that is the absence or presence of one has no impact on the outcome of each phenomenon. Two events A and B are said to be independent, if the occurence of one has no bearing on the probability or chance that B will occur. This means that each event occurs without reliance on the occurence of the other. This is different from mutually exclusive event whereby event A has direct bearing in the probability of the occurence of event B.

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3 years ago

Each year America.EDU ranks the best paying college degrees in America. The following data show the median starting salary, the

Ede4ka [16]

Answer:

Step-by-step explanation:

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4 years ago

Drag each interval to a box to show if the function shown is increasing, decreasing or neither over that interval

Stolb23 [73]

Answer:

6 < x < 8 is decreasing

10 < x < 14 is neither

8 < x < 10 is increasing

4 < x < 6 is increasing

1 < x < 4 is decreasing

Step-by-step explanation:

just see where the line is going up or down

down is decreasing

up is increasing

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3 years ago

Two stores sell the same television for the same original price. Store A advertises that the television is on sale for 30% off t

user100 [1]

The answer is 0.7p=p-250

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3 years ago

Can somebody help me please and thank you, this is due today. No links please!​

Can somebody help me please and thank you, this is due today. No links please!