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
ehidna [41]
3 years ago
12

principal phillipi used a random sample of 20 students records to determine how far, in miles, students live from the school. Th

e results are shown below 3 4 5 3 4 5 6 5 4 3 2 3 4 5 6 4 8 4 3 2 what is the mean distance that his students live from the school rounded to the nearest tenth
Mathematics
2 answers:
Vaselesa [24]3 years ago
6 0

Answer:

Da correct answer is 4.2

Step-by-step explanation:

Hope it helps and stay safe out there

zzz [600]3 years ago
5 0
To find the mean:

Take <span>3 4 5 3 4 5 6 5 4 3 2 3 4 5 6 4 8 4 3 2 and add them all together

=83

Now you divide 83 by the number of terms in the sample set, which is 20. 

83/20 = 4.15

For rounding to the nearest tenth, look at the hundredths space, which is 5. Since it is 5 or higher, round the tenths up one. 

final answer= 4.2 </span><span />
You might be interested in
URGENT 15 POINTS<br> find the measure of angle x
Mandarinka [93]

Answer:

83.1

Step-by-step explanation:

well it gives you the adjacent side and the hypotenuse so you would use

cos-1(3/25)

Hint : SOH _ CAH _ TOA

4 0
3 years ago
Pick an Dessert for every single day?
scoundrel [369]

Answer:

I don't know what to pick! both look sooooo yummy =P. If i had to chosse i would pick the second one.

Step-by-step explanation:

3 0
3 years ago
What is the side length of the square shown Below. Please SHOW your work.
barxatty [35]

Answer:

side length = (x+11)

Step-by-step explanation:

area = x^2+22x+121

side length = sq rt (x^2+22x+121)

side length = (x+11)

4 0
3 years ago
Read 2 more answers
Find volume with full working out ty
Readme [11.4K]

Answer:

3000 cm³

Step-by-step explanation:

Volume = Difference of Volumes of the two pyramids

Volume, V1, of the larger pyramid with tip at L:

Base area = area of EFGH = 10²

Height = ML = 15

V2 = ⅓×(10²)×15 = 4000

Volume, V2, of the smaller pyramid with tip at L:

Base area = area of = 10²

Height = OL = OM+ML = 15+15 = 30

V1 = ⅓×(10²)×30 = 1000

Volume = V1 - V2

= 4000-1000 = 3000 cm³

4 0
3 years ago
The mean points obtained in an aptitude examination is 159 points with a standard deviation of 13 points. What is the probabilit
Korolek [52]

Answer:

0.4514 = 45.14% probability that the mean of the sample would differ from the population mean by less than 1 point if 60 exams are sampled

Step-by-step explanation:

To solve this question, we have to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples are 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.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 159, \sigma = 13, n = 60, s = \frac{13}{\sqrt{60}} = 1.68

What is the probability that the mean of the sample would differ from the population mean by less than 1 point if 60 exams are sampled?

This is the pvalue of Z when X = 159+1 = 160 subtracted by the pvalue of Z when X = 159-1 = 158. So

X = 160

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

By the Central Limit Theorem

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

Z = \frac{160 - 159}{1.68}

Z = 0.6

Z = 0.6 has a pvalue of 0.7257

X = 150

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

Z = \frac{158 - 159}{1.68}

Z = -0.6

Z = -0.6 has a pvalue of 0.2743

0.7257 - 0.2743 = 0.4514

0.4514 = 45.14% probability that the mean of the sample would differ from the population mean by less than 1 point if 60 exams are sampled

7 0
3 years ago
Other questions:
  • What are 3 ratios for 20 nails for every 20 shingles<br> (1/4)
    15·1 answer
  • What pattern do you see when you count to 30
    15·1 answer
  • The U.S public debt as of October 2010 was $9.06 times 10 to the 12th power. What was the average US public debt per American if
    13·1 answer
  • 1. Which of the following relations is a function?
    5·1 answer
  • if a person wants to tripple their salary in five year, when they already makes 19,000 their first year and 6500 more than the p
    6·1 answer
  • At the Mobil Station on Long Beach Road, it costs $65 for 18 gallons of unleaded gasoline. If you only have $50. how many gallon
    12·2 answers
  • Amelia had 26 sea shells. Then, she collected 11 more sea shells. After that, she gave S sea shells to her little sister. Which
    8·2 answers
  • A<br><br> b<br><br> c<br><br> dㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
    13·1 answer
  • What is the slope, Please help ASAP
    9·2 answers
  • I really need helppppp
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!