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Anna35 [415]
3 years ago
9

When Poll Pasked students to identify their favorite kind

Mathematics
1 answer:
Arada [10]3 years ago
3 0

Answer:

120 students

Step-by-step explanation:

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Normal Distribution Problem. Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy
GarryVolchara [31]

Answer: a) 0.9332, b) 0.8944

Step-by-step explanation: the probability value attached to a z score is gotten by using a z distribution table.

The z score is gotten by making use of the formulae below

Z = x - u / σ

Where x = sample mean, u = population mean and σ = population standard deviation.

a)

For our question, u = 38, σ = 12, we are to look for the z score at z ≤ 56, that's x = 56

By substituting the parameters, we have that

z ≤ 56 = 56 - 38/ 12

z ≤ 56 = 18/12

z ≤ 56 = 1.5

To get the probabilistic value, we check the normal distribution table.

The table I'm using will be giving me probabilistic value towards the left of the area.

From the table, p ( z ≤ 56) = 0.9332.

b)

Z >23 = 23 - 38/ 12

Z >23 = - 15/ 12

Z >23 = - 1.25

The probability value of this z score is towards the right of the distribution but the table I'm using is only giving probability values towards the left.

Hence Z >23 = 1 - Z<23

From the table, Z<23 = 0.1056.

Z >23 = 1 - 0.1056

Z >23 = 0.8944

4 0
3 years ago
Read 2 more answers
6) A plane is preparing to land. It is at an altitude of
slavikrds [6]

Answer:

b

Step-by-step explanation:

4800-1400 because 200*7 equals 1400.

3 0
3 years ago
A dragonfly traveled at a rate of 35 miles per hour for 2.5 hours. What distance did the dragonfly travel?
igomit [66]

The dragonfly traveled a distance of 87.5 miles at a rate of 35 miles per hour.

Explanation:

Distance traveled by butterfly at the rate of 34 miles per hour in 2.5 hours
=35 mi/hr × 2.5 hour
=<span><span>35mi</span><span>hour</span></span> ×2.5 <span>hour</span>
=<span>35mi⋅<span>2.51</span>⋅<span>1010</span></span>
=<span>35mi⋅<span>2510</span></span>
=<span>35mi⋅<span>52</span></span>
=<span>175m<span>i2</span></span>
=<span>87.5mi</span>

∴ It would travel a distance of 87.5 miles.
Here mi represents miles.

8 0
3 years ago
Read 2 more answers
Which equations are true?
dedylja [7]

Answer:

A and B

Step-by-step explanation:

A) Collect like terms

0=0

B) Collect like terms

0=0

A and B both correct

6 0
2 years ago
Read 2 more answers
Help!!!<br> I will mark the person who answers with an actual answer brainliest<br> Due soon
Gwar [14]

Answer:

Im not entirely sure but i think that either a or d is correct

Step-by-step explanation:

hope this helps!

3 0
3 years ago
Read 2 more answers
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