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
Pavlova-9 [17]
2 years ago
7

Pls help me first get 10 you know

Mathematics
1 answer:
Luba_88 [7]2 years ago
7 0

Option D, 63 cm

Explanation:

The scale of model is of local park  is

This means that each dimension of the model is 21 times smaller than the actual park (to be developed in future)

Given -

Depth of the pond  centi meter

Depth of the real pond will be 21 times of the depth of the model.

Thus , real pond's depth is equal to

cm

Hence, option D is correct

You might be interested in
Please help me thank you so much i will give brainliest answer if you get it right
Setler79 [48]

Answer:

the first four

Step-by-step explanation:

The last two do not equal 9 or .90

7 0
3 years ago
Number line , need help! Merry Christmas!
Kruka [31]

Answer:

It is A ( sister helped me if it does not work it is B) \

Have a great day and MERRY CHRISTMAS!!!

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The overhead reach distances of adult females are normally distributed with a mean of 197.5 cm197.5 cm and a standard deviation
fiasKO [112]

Answer:

a) 5.37% probability that an individual distance is greater than 210.9 cm

b) 75.80% probability that the mean for 15 randomly selected distances is greater than 196.00 cm.

c) Because the underlying distribution is normal. We only have to verify the sample size if the underlying population is not normal.

Step-by-step explanation:

To solve this question, we need 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 normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, we have that:

\mu = 197.5, \sigma = 8.3

a. Find the probability that an individual distance is greater than 210.9 cm

This is 1 subtracted by the pvalue of Z when X = 210.9. So

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

Z = \frac{210.9 - 197.5}{8.3}

Z = 1.61

Z = 1.61 has a pvalue of 0.9463.

1 - 0.9463 = 0.0537

5.37% probability that an individual distance is greater than 210.9 cm.

b. Find the probability that the mean for 15 randomly selected distances is greater than 196.00 cm.

Now n = 15, s = \frac{8.3}{\sqrt{15}} = 2.14

This probability is 1 subtracted by the pvalue of Z when X = 196. Then

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

By the Central Limit Theorem

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

Z = \frac{196 - 197.5}{2.14}

Z = -0.7

Z = -0.7 has a pvalue of 0.2420.

1 - 0.2420 = 0.7580

75.80% probability that the mean for 15 randomly selected distances is greater than 196.00 cm.

c. Why can the normal distribution be used in part​ (b), even though the sample size does not exceed​ 30?

The underlying distribution(overhead reach distances of adult females) is normal, which means that the sample size requirement(being at least 30) does not apply.

5 0
3 years ago
M<5=? what’s it equal
WINSTONCH [101]

Answer:

<8

Step-by-step explanation:

They are the same angle degree.

5 0
3 years ago
If someone deposits $3,000 into a savings account, keeps the account open for 6 years, and ends up earning $720 in interest, wha
kykrilka [37]

Answer:

3750

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Lucy wants to make a table top pad for a square table that has a side of 3 feet. What is the area of the pad?
    7·2 answers
  • What is the volume of the square in units cubed
    5·1 answer
  • Help me out please thank you
    7·2 answers
  • If the length of the rectangle is twice the width and the perimeter of the rectangle is 30 cm what is the length and width of th
    11·2 answers
  • What number is 80% of 50
    10·1 answer
  • QUSTUN 5
    11·2 answers
  • Consider two points on the PPF: point A, at which there are 50 oranges and 100 apricots, and point B, at which there are 51 oran
    15·1 answer
  • PLZZZ. HELP ME. IM GIVING AWAY LOADS OF POINTSSSSSSSSSSSS
    14·1 answer
  • Simplify (-8q3,4s2)2 = ?<br> A. -649-1654<br> B. 6496854<br> C. -6496854<br> D. 6499-1684
    13·1 answer
  • Select the correct answer.<br> What is the value of x?<br> log^2(x+ 7) = 2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!