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alexdok [17]
3 years ago
7

50 boys and 50 girls with ADD (Attention Deficit Disorder) were selected for an

Mathematics
1 answer:
Vladimir79 [104]3 years ago
7 0

Answer:

Design of Experiments Basics

Design of experiments (DOE) is a systematic method to determine the relationship between factors affecting a process and the output of that process. In other words, it is used to find cause-and-effect relationships. ... An understanding of DOE first requires knowledge of some statistical tools and experimentation concepts.

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What is the length of PQ , rounded to the nearest tenth.
Assoli18 [71]

Answer:

10.8 units

Step-by-step explanation:

7 0
3 years ago
The daily dinner bills in a local restaurant are normally distributed with a mean of $28 and a standard deviation of $6. What ar
Degger [83]

Answer:

The minimum value of the bill that is greater than 95% of the bills is $37.87.

Step-by-step explanation:

When the distribution is normal, we use 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, we have that:

\mu = 28, \sigma = 6

What are the minimum value of the bill that is greater than 95% of the bills?

This is the 95th percentile, which is X when Z has a pvalue of 0.95. So X when Z = 1.645.

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

1.645 = \frac{X - 28}{6}

X - 28 = 6*1.645

X = 37.87

The minimum value of the bill that is greater than 95% of the bills is $37.87.

4 0
3 years ago
How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!
Firlakuza [10]

Answer: C) Today's soup will taste the same

====================================================

Explanation:

The usual recipe has 9 tomatoes for every 12 bowls. This forms the ratio 9:12.

Divide both parts of the ratio by 12 to end up with 0.75:1

  • 9/12 = 0.75
  • 12/12 = 1

The ratio 0.75:1 means that there are 0.75 tomatoes for each bowl.

--------------

Then the restaurant updates the recipe to involve 6 tomatoes for every 8 bowls, leading to the ratio 6:8. Divide both parts by 8

  • 6/8 = 0.75
  • 8/8 = 1

The ratio 6:8 is the same as 0.75:1

---------------

We get the same ratio (0.75:1) each time we turn that second number into a 1, which means that each bowl involves the same number of tomatoes. Therefore, the taste should be the same.

Of course the concept of taste is subjective, meaning that the taste could easily vary over time even if you involved the same number of tomatoes. Also, the taste may vary from person to person. However, there should be an objective way to measure the "tomato"ness of each bowl.

4 0
2 years ago
Sin(-x) = -sin x for all values of x true or false?<br> I
marissa [1.9K]
<span>Sin(-x) = -sin x for all values of x, IT IS TRUE
Because sinx is an odd function</span>
5 0
3 years ago
A sphere has a radius of 17 inches. Find the volume of the sphere described. Use 3.14 for . Round your answer to the nearest hun
Morgarella [4.7K]

Answer:

20579.53 will be your answer good sir.

Step-by-step explanation:

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3 years ago
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