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lukranit [14]
2 years ago
7

What is the range of this function?

Mathematics
1 answer:
Vera_Pavlovna [14]2 years ago
4 0

Answer:

(C) -∞ < y ≤ 4

Step-by-step explanation:

For range, you gotta read the y-coordinates. The maximum it reaches is +4 and the minimum it goes is -∞ thus making it's range (-∞, 4].

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valentinak56 [21]
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For women aged 19-24, systolic blood pressures (in mm Hg) are normally distributed with a mean of 114.8 and a standard deviation
Mrac [35]

Answer: p = 0.00714

Step-by-step explanation:

Since the population standard deviation of the distribution is known, the z test ( which produces the z score) is the perfect test for finding the probability of the data set in the question.

From the question,

Population mean (u) = 114.8

Sample mean (x) = 121.5

Population standard deviation (σ) = 13.1

Sample size (n) = 23

The z score formulae is given below as

Z = x - u/σ/√n

Z = 121.5 - 114.8/(13.1/√23)

Z = 6.7/(13.1/√23)

Z = 6.7/2.731

Z = 2.45.

The question is interested in knowing the probability of mean systolic blood pressure greater than 121.5.

This implies that we are looking for the probability at which our z score is greater than 2.45: P(z>2.45)

The z score (z=2.45) has divided the distribution into two regions, z< 2.45 ( area to the left of the distribution) and z>2.45 ( area to the right of distribution).

Hence, p(z>2.45) + p(z<2.45) = 1

To get a the probability, we have to use a standard normal distribution table.

The table we have here gives probability of the distribution to the left ( that's area towards the left), hence we need to find p(z<2.45) first

From the table p(z<2.45) = 0.99286

But p(z>2.45) = 1 - p(z<2.45)

p(z>2.45) = 1 - 0.99286

p(z>2.45) = 0.00714

8 0
3 years ago
Find the area of this circle. Use 3 for T.<br> A = 7r2<br> 4 in<br> [?] in2<br> Enter<br> Help!!!!!
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2. Decide which estimate is closest to the actual answer. Explain your reasoning.
sashaice [31]
Question A 
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Question C
take 0.78 and divide it by 20L which would equal 0.039
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6 0
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In 2 mins., a conveyor belt moves 300 lbs. Of recycle aluminum from delivery truck to a storage area. A smaller belt moves the s
kodGreya [7K]

Answer:

1.8 minutes or 108 seconds

Step-by-step explanation:

The question tells us that the larger belt moves 300 lbs in 2 mins. And this is equal to 150 lb per minute

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Both belts will move at a rate of 166.667 lb per min.

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Therefore, the answer is 1.8 min

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