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DIA [1.3K]
3 years ago
6

Help please? Questions 1-15 i really need it♡

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
7 0

Answer:

here:

1. -9

2. -28

3. 54

4. -100

5. -60

6. -0

7.  49

8. -135

9. -96

10. 300

11. -153

12. -192

THIS TOOK LONG BECAUSE I DID A LONG ONE BUT THEN I MADE IT SHORTER. :D

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A survey found that women's heights are normally distributed with mean 62.6 in. And standard deviation 2.5 in. The survey also f
Soloha48 [4]

Answer:

The new height requirements are minimum of 64.1875 inches and maximum of 68.3 inches

Step-by-step explanation:

To exclude the tallest 50% of men and shortest 5% of men, we need to find the critical z-value for a significance level of 0.5 & 0.05 and then solve for x in the z-score equation.

For significance value of 0.5, z = 0

We are given;

μ = 68.3 in

σ = 2.5 in

Thus from z = (x - μ)/σ, we have;

0 =(x - 68. 3)/2.5

0 = x - 68. 3

x = 68.3 inches for men max

Similarly, for significance value of 0.05, z = -1.645

Thus to find x;

-1.645 = (x - 68. 3)/2.5

-4.1125 = x - 68.3

x = 68.3 - 4.1125

x = 64.1875 inches for men min

7 0
2 years ago
The standard deviation and the mean of 16 values are 15.6 and 20.5. What is the coefficient of variation ?​
EastWind [94]

Answer:

CV = coefficient of variation = 0.761

Step-by-step explanation:

The coefficient of variation is defined as the standard deviation divided by the mean of a population, which in this case,

standard deviation = 15.6

mean = 20.5

CV = coefficient of variation = 15.6/20.5 = 0.761

Note that if the 16 values form a sample (i.e. not the entire population), the above result is an estimate of the CV.

5 0
3 years ago
How many hours and minutes are between 8:00 am and 11:45 am?​
Tom [10]

Answer:

3hours and 45minutes....

6 0
2 years ago
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Answer:

C. 0.22

Step-by-step explanation:

because 105 males out of the studied 479 watched an action movie and 105/479 = 0.219 which is 0.22

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3 years ago
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Neporo4naja [7]
Because it states that for every amount of something there is a certain amount based on something else. For example, for every apple i have, i will have two bananas. This will go into the ratio 1:2. Hope this helps☺
7 0
3 years ago
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