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3 years ago

CAN ANYONE PLEASE (WHO IS AN EXPERT AT MATHEMATICS) HELP ME WITH THIS.

Mathematics

2 answers:

NikAS [45]3 years ago

4 0

Answer:

5 units were bought

Step-by-step explanation:

Firstly, let us calculate the total amount paid

If what was paid was $9.45, this cost includes the price of the coupon subtracted

Returning the coupon price, we have the total as;

9.45 + 0.5 = $9.95

So to get the number bought, we divide this total by the price for one

We have this as;

9.95/1.99 = 5

liberstina [14]3 years ago

3 0

Answer:

5 units

Step-by-step explanation:

9.95/1.99 = 5

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3 years ago

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4 years ago

Brianna received an overall IQ score of 117 on the Wechsler Scale. This means that Brianna has scored approximately____________

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Using the normal distribution, it is found that the correct option is:

D. 1; 100

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

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

It measures how many standard deviations the measure is from the mean.

In this problem:

The mean on the Wechsler Scale is of 100, hence $\mu = 100$ .

The standard deviation is of 17, hence $\sigma = 17$ .

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Then:

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