1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
muminat
3 years ago
15

Find the mead, median, and mode

Mathematics
2 answers:
Ann [662]3 years ago
7 0

Answer:

Median 4 Mean 5.5 Mode 2

Step-by-step explanation:

grin007 [14]3 years ago
7 0

Answer:

<em>B. Mean: 5.5 Median: 4 Mode: 2</em>

Step-by-step explanation:

1, 1, 2, 2, 2, 4, 5, 5, 9, 15, 15

Mode: 2

Median: 4

Mean: 1 + 1 + 2 + 2 + 2 + 4 + 5 + 5 + 9 + 15 + 15 = 61/11 = 5.5

You might be interested in
Of the total population of American households, including older Americans and perhaps some not so old, 17.3% receive retirement
Alex Ar [27]

Answer:

47.54% probability that more than 20 households but fewer than 35 households receive a retirement income

Step-by-step explanation:

We use the binomial aproxiation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

p = 0.173, n = 120. So

\mu = E(X) = np = 120*0.173 = 20.76

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{120*0.173*0.827} = 4.14

In a random sample of 120 households, what is the probability that more than 20 households but fewer than 35 households receive a retirement income?

We are working with discrete values, so this is the pvalue of Z when X = 35-1 = 34 subtracted by the pvalue of Z when X = 20 + 1 = 21.

X = 34

Z = \frac{X - \mu}{\sigma}

Z = \frac{34 - 20.76}{4.14}

Z = 3.2

Z = 3.2 has a pvalue of 0.9993

X = 21

Z = \frac{X - \mu}{\sigma}

Z = \frac{21 - 20.76}{4.14}

Z = 0.06

Z = 0.06 has a pvalue of 0.5239

0.9993 - 0.5239 = 0.4754

47.54% probability that more than 20 households but fewer than 35 households receive a retirement income

6 0
3 years ago
______ x ________ = 16
Arlecino [84]
1) 4 times 4 = 16
2) 2 times 2 times 9 = 36
3) 4 times 2 times 9 = 72
4) x + y + z = n
    (any solution that is true)
6 0
3 years ago
What are the steps to covert the answer into a mixed fraction of this problem 45 x 3/8= 135/8
riadik2000 [5.3K]
1. Divide 135 by 8 which is equal to 16
2. Multiply 16 ×8 = 128
3. Subtract 135 - 128 =7

The seven represent the numerator so it would be 7/8.

The finally answer would be

16 \ \frac{7}{8}
7 0
3 years ago
A bird is gliding at 40 meters per minute. How long, in minutes, will it take the bird to travel 160 meters?
adoni [48]

Answer:

<u>4 minutes</u>

Step-by-step explanation:

40=1 min

40=2 min

40=3 min

40=<u>4</u> min

40x4 or 40+40+40+40 is <u>160</u>

6 0
2 years ago
Find the number that is 42 less than twice the<br> opposite of itself.
maria [59]
42 - -84=-42

Hope this helps :)
8 0
2 years ago
Other questions:
  • How to work out a magic square
    10·1 answer
  • Use appropriate algebra and theorem 7.2.1 to find the given inverse laplace transform. (write your answer as a function of t.) −
    9·1 answer
  • What’s 5+5 divided by 20
    9·1 answer
  • Which equation is for a line passing through (-2,3) and (3,4)?
    11·1 answer
  • What is 45% in a fraction ?
    14·2 answers
  • What is the equation that matches this table?
    13·1 answer
  • HELP ME FAST!!<br><br><br> What is the different between (3,2) and (3, -6)?
    11·1 answer
  • 15a &gt; 75. Substitute 5 for a. PLEASE HELP
    8·1 answer
  • 0.8 k - 20 = -60<br><br> what does ‘k’ equal?
    8·2 answers
  • would really appreciate it if anyone could help me, I keep getting my calculations wrong and the website keeps saying my answer
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!