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
notka56 [123]
3 years ago
5

HELP 13 & 14 HHHEEELLLPPP

Mathematics
1 answer:
Lerok [7]3 years ago
8 0
32/36 for number 13
3/7 = 9 to 21 for number 14
You might be interested in
Is this right pls...
Dmitry [639]
Yuppp, it is correct!
6 0
3 years ago
Read 2 more answers
What is the coefficient of the term -4yz/3
Leya [2.2K]
-4/3 should be the answer
4 0
3 years ago
Read 2 more answers
What is the average of the data (round your answer to one decimal place)
SVEN [57.7K]
By adding all the numbers and dividing by 7 ( the amount of numbers) you know that the answer will be about 166.3
6 0
3 years ago
Read 2 more answers
What is 6/15-9/15 i need help plz
Xelga [282]

Answer:

-3/15 is the difference between 6/15-9/15

3 0
3 years ago
A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measurin
Ratling [72]

Answer:

The standard deviation of weight for this species of cockroaches is 4.62.

Step-by-step explanation:

Given : A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

To find : What is the approximate standard deviation of weight for this species of cockroaches?

Solution :

We have given,

Mean \mu=50

The sample mean x=55

A lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

i.e. P(X>55)=14%=0.14

The total probability needs to sum up to 1,

P(X\leq 55)=1-P(X>55)

P(X\leq 55)=1-0.14

P(X\leq 55)=0.86

The z-score value of 0.86 using z-score table is z=1.08.

Applying z-score formula,

z=\frac{x-\mu}{\sigma}

Where, \sigma is standard deviation

Substitute the values,

z=\frac{x-\mu}{\sigma}

1.08=\frac{55-50}{\sigma}

1.08=\frac{5}{\sigma}

\sigma=\frac{5}{1.08}

\sigma=4.62

The standard deviation of weight for this species of cockroaches is 4.62.

4 0
3 years ago
Other questions:
  • The comfy couch furniture store purchased 3 1/3 pages to advertise upcoming sales for the summer. when the store did not receive
    9·1 answer
  • An increase in the money supply that causes money to lose its purchasing power and prices to rise is known as______________
    11·2 answers
  • Twice Jack's age plus 5 is 21. Write and solve an equation. How old is Jack?
    14·2 answers
  • What is a dollar in fraction
    5·2 answers
  • What is the best way for the following expression to be read?
    5·1 answer
  • In China, where many couples were allowed to have only one child, the probability of a baby being a boy was 0.545. Among six ran
    14·1 answer
  • Pls help me with this answer part B please​
    13·2 answers
  • 49 – 3m = 4m + 14 please help
    14·1 answer
  • A restaurant bought 5 pounds of salmon for $42.50. How much would 7 pounds of salmon cost? *
    6·1 answer
  • Please help quick will mark brainliest
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!