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defon
2 years ago
15

Type 8,580 words in 2 hours 45 minutes

Mathematics
1 answer:
Inessa05 [86]2 years ago
6 0
You would average 52 words a minute.

8580 / 165 (60 + 60 + 45) = 52
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If in a sample of 355 adult males, we have a mean total cholesterol level of 185 mg, with s = 16. What is the 95% confidence int
sladkih [1.3K]

Answer:

Step-by-step explanation:

We want to determine a 95% confidence interval for the mean total cholesterol level of all males.

Number of sample, n = 355

Mean, u = 185 mg

Standard deviation, s = 16

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

185 +/- 1.96 × 16/√355

= 185 +/- 1.96 × 0.849

= 185 +/- 1.66404

The lower end of the confidence interval is 185 - 1.66404 =183.336

The upper end of the confidence interval is 185 + 1.66404 = 186.66

Therefore, with 95% confidence interval, the mean total cholesterol level of all males is between 183.336 mg and 186.66 mg

5 0
3 years ago
What is 8.2% of 500?
GuDViN [60]

Answer:

8.2% of 500 = 41

Step-by-step explanation:

Set up the equation. On a piece of paper, write the dividend (number being divided) on the right, under the division symbol, and the divisor (number doing the division) to the left on the outside. ...

Divide the first digit. ...

Divide the first two digits. ...

Enter the first digit of the quotient.

5 0
3 years ago
Read 2 more answers
7n + 5n2 + 10 – 7n<br><br> Simplify the expression
Travka [436]

Answer:

10n+10

Step-by-step explanation:

7n-7n+5n2+10

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Hope this helps :D

#Team Rainbows

7 0
3 years ago
Alex leaves school to go home. He walks 11 meters North and then 10 meters West. How far is Alex from the school?
yuradex [85]

Answer:

~15 meters away

Step-by-step explanation:

c^2 = a^2+b^2

c^2 = 10^2+11^2

c^2 = 100+121

c^2 = 221

c = \sqrt{221}

c = ~15

3 0
3 years ago
Quanto é o resultado e como ae resolve a seguinte operação: 1.205 × 32 Me ajudem preciso para hj.
Elenna [48]

Answer:

la respuesta es 38560

Step-by-step explanation:

5 0
2 years ago
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