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3 years ago

What is the area of radius = 10.8 in

1 answer:

6 0

The answer is 33.93 because if you do the raidus which is 10.8 times pie you should get 33.929 then round to the nearest tenth

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The two dot plots below compare the forearm lengths of two groups of schoolchildren:

denpristay [2]

B is the correct answer u mark it

8 0

3 years ago

What is the value of the expression 5y2 + 4x when x = 2.5 and y = 3?

LUCKY_DIMON [66]

Answer:

it is 55 the 2nd one

5(9)+10=55

4 0

3 years ago

Read 2 more answers

What is the smallest three-digit number divisible by the first three prime numbers and the first three composite numbers?

Flura [38]

Its 120. Divisible by 1,2,3,4,6,8.

5 0

3 years ago

Males have red blood cell counts with a mean of 4.719 and a standard deviation of .490, while females have red blood cell counts

iVinArrow [24]

Answer:

The female has a higher count relative to the sample of females than the male relative to the sample of males.

Explanation:

When you want to compare the means of two samples with different statistics you may use the z-score.

The z-score measures how far a value (data point) is from the mean, in terms of the standard deviation.

The z-score is calculated as:

$z-score=(x-\mu )}/\sigma$

Where:

$x=\text{value of the data}\\\\\mu =mean\\\\\sigma = \text{standard deviation}$

1. Male with a count of 5.58

$z-score=(5.58-4.719)/0.490=1.757$

2. Female with a count of 5.23

$z-score=(5.23-4.349)/0.402=2.192$

Therefor, the z-score of the female is greater than the z-score of the male.

The greater z-score means that, relative to her group, the female has a higher count than the male.

7 0

3 years ago

A binomial distribution has p = 0.05 and n = 50. what is the mean of this distribution?

Kruka [31]

2.5 is the mean of this distribution.

What is the distribution's mean?

The expected value, commonly known as the mean of a statistical distribution with a continuous random variable, is calculated by integrating the product of the variable's probability as described by the distribution.
The lowercase Greek letter mu () stands for the expected value. A probability of 50% equals zero standard deviations, and the mean is in the middle of the normal distribution.

Given: p = 0.05 and n= 50

Mean of the binomial distribution = n×p = 50 × 0.05 = 2.5

Therefore, option a is the correct answer. Other options are incorrect because these are irrelevant.

Learn more about binomial distribution

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7 0

2 years ago