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
Step2247 [10]
2 years ago
11

In a recent survey of 655 working Americans ages 25-34, the average weekly amount spent on lunch was 43.76 with standard deviati

on 2.67. The weekly amounts are approximately bell-shaped. (c) Between what two values will approximately 95% of the amounts be?
Mathematics
1 answer:
klemol [59]2 years ago
8 0

Answer:

Between 38.42 and 49.1.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 43.76, standard deviation of 2.67.

Between what two values will approximately 95% of the amounts be?

By the Empirical Rule, within 2 standard deviations of the mean. So

43.76 - 2*2.67 = 38.42

43.76 + 2*2.67 = 49.1

Between 38.42 and 49.1.

You might be interested in
In the division problem, what does the 8 represent in the quotient?<br> 3653÷13=281
yan [13]

Answer:

The eight represents a tenth/ten

Step-by-step explanation:

The 2 represents a two hundred, the 8 a eight tenth/eighty and the 1 a one

5 0
3 years ago
Randall has an account balance of $675.54 in a savings account that earns interest at a rate of 2.5% compounded twice a year. If
Alex_Xolod [135]
To calculate amount accrued after a given period of time we use the compound interest formula: A= P(1+r/100)∧n where A i the amount, P is the principal amount, r is the rate of interest and n is the interest period.
In the first part; A= $ 675.54, r= 1.25% (compounded semi-annually) and n =22 ( 11 years ),  hence, 675.54 = P( 1.0125)∧22
   = 675.54= 1.314P
 P= $ 514.109 , therefore the principal amount was $ 514 (to nearest dollar)
Part 2
principal amount (p)= $ 541, rate (r) = 1.2 % (compounded twice a year thus rate for one half will be 2.4/2) and the interest period (n)= 34 (17 years×2)
Amount= 541 (1.012)∧34
             = 541 ×1.5
             = $ 811.5
Therefore, the account balance after $ 811.5.

5 0
3 years ago
At Kirby Middle School, some students were surveyed to see which social media app they used the most. The results are shown belo
Murljashka [212]

Answer:

44%

Step-by-step explanation:

you add up all the numbers to get the total then divied the single number (eg. 8) by the total. It will then show up as a decimal so in order to get rid of the decimal you multiply by 100. ( eg. 8 ÷50=0.16 → 0.16×100= 16 → 16% )

5 0
3 years ago
What are the two conditions that an asset of a business needs to fulfill?
Darina [25.2K]

Answer:

<h2>✒️Answer:</h2>

<u>Two conditions must be satisfied. First, the revenue must be earned, which typically means that the customer has received the good or service. Second, the revenue must have been realized or realizable, implying that the customer has paid or is expected to pay for the merchandise.</u>

Step-by-step explanation:

<h2>#CarryOnLearning</h2>

watch.some.anime

4 0
2 years ago
The frequency (F) and length (L) of a wave are related by the following formula: F x L = 3.0 x 10^10. Consider that the waveleng
Sphinxa [80]
The correct answer: 2.3 x 10^18
7 0
3 years ago
Other questions:
  • The value of 3 in 3,456 is what times the value of 3 in 546,300
    6·2 answers
  • How to do I am stuck with the q
    8·1 answer
  • Evaluate 8r-rs when r=6 and s=5
    9·2 answers
  • A baker needs a total of 13(1/3) cups of flour to make four batches of cookies. How much flour, in cups, does she need for each
    5·2 answers
  • Melinda will take 15 quizzes this semester. She would like to score a B or better on at least 90% of them. So far, she has gotte
    7·2 answers
  • Find the sine of Write your answer in simplified, rationalized form. Do not round.<br> Please help!!!!!
    7·1 answer
  • Help please I don’t get it
    7·1 answer
  • A one-year membership to Metro Gym costs $460. There is a fee of $40 when you join, and the rest is paid monthly. Write an equat
    14·1 answer
  • Can you add a negative and positive fraction?
    10·1 answer
  • A cell phone company charges $50 plus $40 per line each month. Luke must spend under $170 on his family's cell phone bill each m
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!