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
kolezko [41]
3 years ago
8

The lengths of a certain species of fish are approximately normally distributed with a given mean and standard deviation. Accord

ing to the Empirical Rule, what percentage of the fish will have lengths within 1 standard deviation of the mean?
a) 34%
b) 47.5%
c) 68%
d) 99.7%
Mathematics
2 answers:
umka21 [38]3 years ago
5 0

Answer:

c) 68%

Step-by-step explanation:

The empirical rule states that most of the data will be within three standard deviations in a normal distribution. The 68% of the data will be within one standard deviation, the 95% will be within two standard deviations, and 99.7% of the data will be within three standard deviations.

A normal distribution is a continuous distribution in which values around the mean are the most frequents. It can also be called a bell-shaped distribution.

RSB [31]3 years ago
3 0

Answer:

c.) 68%

Step-by-step explanation:

jut took test on ed

You might be interested in
How do you do this!?! need to know in 3 hours
Leni [432]
Angle 1 and 3  will be the same 101 and angle 2 and 4 will be the same 79 
5 0
3 years ago
Rent-Me Rent-A-Car charges $25.00 per day plus $0.14 per mile to rent an economy car. Better Deal Rental Car charges $23.00 per
zalisa [80]

Answer:

The number of miles at which a car rented from either company cost the same amount is <u>50 miles</u>.

Step-by-step explanation:

Let x represents the number of miles at which a car rented from either company cost the same amount. Therefore, we can have the following equation:

RC = 25 + 0.14x ....................... (1)

BC = 23 + 0.18x ...................... (2)

Where;

RC = Total cost of Rent-Me Rent-A-Car

BC = Total cost of Better Deal Rental Car

The the cost of the two companies equal where RC = BC. Therefore, we equate equations (1) and (2) and solve for x as follows:

25 + 0.14x = 23 + 0.18x

25 - 23 = 0.18x - 0.14x

2 = 0.04x

x = 2 / 0.04

x = 50

Therefore, the number of miles at which a car rented from either company cost the same amount is <u>50 miles</u>.

<u>Note:</u>

This can be confirmed for equations (1) and (2) individually by substituting for x = 50 as follows:

For equation (1):

RC = 25 + 0.14(50)

RC = 25 + 7

RC = 32

For equation (2):

BC = 23 + 0.18(50)

BC = 23 + 9

BC = 32

Therefore, RC = BC = 32 confirms the answer.

3 0
2 years ago
Mathmerica Bank offers 2.1% interest compounded yearly
Scilla [17]

Answer:

Total = 2,500 (1.021)^t

Step-by-step explanation:

There is no question but the formula for compound interest is

Total = amount (1 + rate)^time

Total = 2,500 (1.021)^t

6 0
3 years ago
A shirt is regularly priced at 42$. It is on sale for 15% off of the regular price. What is the sale price of the shirt ?
gulaghasi [49]

Answer:

$35.7

Step-by-step explanation:

you can convert 15% to a decimal by dividing by 100.

15/100 = .15

if you multiply the decimal by the cost of the shirt you get how much the discount is.

0.15 * $42 = 6.30

so a 15% discount on a $42 shirt is $6.30 off. So you subtract the discount from the total cost.

$42 - $6.30 = $35.70 that is the sale price of the shirt.

4 0
2 years ago
Read 2 more answers
Please help, ty if you do :D
Dennis_Churaev [7]

Answer:

Your Answer is going to be C

3 0
3 years ago
Other questions:
  • Identify the x and y intercepts of the function y=2x+12
    7·1 answer
  • Given that √3^n = 3^x/27^y. Express n in terms of x and y.
    15·1 answer
  • At Blanca stables there are 20 stallions and 14 mates at Logan’s stables there are 10 stallions and 7 mates which ratio is highe
    14·1 answer
  • What best describes the number 5? write prime, composite, neither prime nor composite, or both.
    15·2 answers
  • Daily demand for a product is 50 units, with a standard deviation of 30 units. The review period is 5 days and the lead time is
    12·1 answer
  • PLEASE HELPP!!
    11·1 answer
  • The average size of a new house built in a Hays county in 2010 was 1,872 square feet. A random sample of 40 new homes built in H
    11·1 answer
  • Determine the number of real solutions of -2x^2+ 5x – 3 = 0.<br> 2<br> 1 (double root)<br> 5 <br> 0
    11·1 answer
  • Answer plsssss i need 5 more
    13·1 answer
  • Given a series discount of 25/25 what is the net cost equivalent?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!