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SCORPION-xisa [38]

2 years ago

14

Use the graph to approximate the ordered pair where the exponential function begins to exceed the quadratic function. a. (2.5,5)

1 answer:

riadik2000 [5.3K]2 years ago

7 0

Answer:

a. (2.5,5)

Step-by-step explanation:

f(x) exponential function exceed quadratic function g(x) at (2.5 , 5)

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At a Psychology final exam, the scores are normally distributed with a mean 73 points and a standard deviation of 10.6 points. T

USPshnik [31]

Answer:

The score that separates the lower 5% of the class from the rest of the class is 55.6.

Step-by-step explanation:

Problems of normally distributed samples can be 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 question:

$\mu = 73, \sigma = 10.6$

Find the score that separates the lower 5% of the class from the rest of the class.

This score is the 5th percentile, which is X when Z has a pvalue of 0.05. So it is X when Z = -1.645.

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

$-1.645 = \frac{X - 73}{10.6}$

$X - 73 = -1.645*10.6$

$X = 55.6$

The score that separates the lower 5% of the class from the rest of the class is 55.6.

3 0

2 years ago

A full container that holds 96 fluid ounces developed a leak in the bottom. After 72 hours, all the liquid had emptied from the

Contact [7]

Answer
this is hard

explanation
sorry i can’t answer i’m bad at math

4 0

2 years ago

A recent survey by the American Automobile Association showed that a family of two adults and two children on vacation in the Un

masha68 [24]

Answer: We are given:

$\mu=247,\sigma=60$

We need to find the z scores for the following vacation expense amounts:

$197, $277, $310

We know that z score formula is:

$z=\frac{x-\mu}{\sigma}$

When $x = 197$ , the z score is:

$z=\frac{197-247}{60}$

$=\frac{-50}{60}$

$=-0.83$

When $x = 277$ , the z score is:

$z=\frac{277-247}{60}$

$=\frac{30}{60}$

$=0.5$

When $x = 310$ , the z score is:

$z=\frac{310-247}{60}$

$=\frac{63}{60}$

$=1.05$

Therefore, the z scores for the vacation expense amounts $197 per day, $277 per day, and $310 per day are -0.83, 0.5 and 1.05 respectively

8 0

2 years ago

Read 2 more answers

A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all

fredd [130]

The answer is B. 3 feet

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2 years ago

A company has five warehouses, only two of which have a particular product in stock. A salesperson calls the five warehouses in

Kaylis [27]

Answer: Check the attached

Step-by-step explanation:

7 0

2 years ago