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LUCKY_DIMON [66]
3 years ago
14

40 POINTS [Statistics] Distributions of sample ranges, means, and medians.

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
8 0
The correct answer for this question is this one:

<span>1. Samples of size n = 150 are randomly selected from the U.S. census data, and the income range is found for each sample. What is the distribution of the sample ranges?

skewed to the right
normal (approximately)
<u>skewed to the left</u>
not enough information provided


2. Samples of size n = 60 are randomly selected from the population of numbers (0 through 9) produced by a random-number generator, and the mean is taken for each sample. What is the distribution of the sample means?

<u>normal (approximately)</u>
not enough information provided
skewed to the right
skewed to the left



3. Samples of size n = 250 are randomly selected from the U.S. census data, and the median income is found for each sample. What is the distribution of the sample medians?

normal (approximately)
not enough information provided
<u>skewed to the left</u>
skewed to the right</span>
Hope this helps answer your question and have a nice day ahead.
aleksandrvk [35]3 years ago
6 0

Answer:

Step-by-step explanation:Ranges are biased. Therefore normal distribution is not applicable.

Unbiased are mean, proportions and variance (skewed to the right). Never are we provided enough information for range and median. The answer is: not enough information.

Hence for both ranges and medians the correct answer is: not enough information. 1 and 3.

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You roll a 6-sided die.
Lerok [7]

Answer:

\huge\boxed{\text{P(not factor of 35) = } \frac{2}{3}}

Step-by-step explanation:

We can use basic probability to find the probability that this roll is not a factor of 35.

First off, we know that with a six sided die there are 6 possible things we can roll.

1, 2, 3, 4, 5, or 6

Now, what are the factors of 35? The factors of 35 will be any whole number that can be multiplied by another whole number to get 35.

  • We know 1 \cdot 35 = 35, so two factors are 1 and 35.
  • We know 5 \cdot 7 = 35, so two factors are 5 and 7.

Therefore, the factors of 35 are 1, 5, 7, 35.

Both 5 and 7 are inside the range of 1-6. So the probability of rolling a side that's a factor of 35 will be  \frac{2}{6} = \frac{1}{3} since there are two factors and 6 possible options.

This means, logically, there is a  \frac{4}{6} = \frac{2}{3}  chance of not rolling a factor of 35.

Hope this helped!

5 0
3 years ago
PLEASE HELP !! ILL GIVE BRAINLIEST !!
Snezhnost [94]

"Alternate exterior angles are the pair of angles that lie on the outer side of the two parallel lines but on either side of the transversal line."

YXZ and TUS

8 0
3 years ago
Help me pleas please can i get help
givi [52]

Answer:

I can't see the question

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please explain I need help with all these
sergey [27]
For all of these you're trying to solve for the variable. The variable is usually a number or symbol.

11) -44+n=36
Step one would be to add 44 to both sides of the equation.

N=80

12) -36=p-91
Step one would be to add -91 to both sides of the equation.

P=55

13) X-225=671
Step one you be to add 225 to both sides of the equation. Although it may seem difficult because of the big numbers, it's the same technique.

14) 19=c-(-12)
Step one on this equation will be a little different. Because there are two negative signs (-), they turn into a plus sign. Remember, two negative signs make a positive sign.

19=c+12

Now you just subtract 12 from each side of the equation.

6=C
3 0
3 years ago
Scientists found the wreck of the titanic 3797 m below sea level. How many km below sea level is the wreck?
WINSTONCH [101]

We are given that the titanic is found 3,797 m below sea level. This is simply equivalent to 3.797 km or 3.8 km when rounded off to one decimal.

We should take note that the letter k in km means kilo and a kilo is equivalent to 1000. So this means that for 1 km there is exactly 1000 m. So to convert, simply multiply a value with unit m with this conversion factor. Conversion factor = 1 km / 1000 m

Depth of titanic = 3,797 m (1 km / 1000 m)

Depth of titanic = 3.797 km = 3.8 km

4 0
3 years ago
Read 2 more answers
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