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
Usimov [2.4K]
3 years ago
14

Let x be a random variable that represents checkout time (time spent in the actual checkout process) in minutes in the express l

ane of a large grocery. Based on a consumer survey, the mean of the x distribution is about μ = 2.7 minutes, with standard deviation σ = 0.6 minute. Assume that the express lane always has customers waiting to be checked out and that the distribution of x values is more or less symmetric and mound-shaped. What is the probability that the total checkout time for the next 30 customers is less than 90 minutes? Let us solve this problem in steps.

Mathematics
1 answer:
Liula [17]3 years ago
3 0

Answer:

steps attached below

Step-by-step explanation:

You might be interested in
Enrique is measuring the mass of a flower petal. Which unit of measurement should he use to eliminate the need to write value in
Whitepunk [10]
The answer is Gramssssss
3 0
3 years ago
Read 2 more answers
3. What is the solution to the equation 3x = 15? Express the
ivanzaharov [21]

Answer:

x=2.4650

Step-by-step explanation:

I assume that you mean 3^x=15

so let s use the ln() function

ln(3^x)= xln(3)=ln(15)

so x = ln(15)/ln(3)

x = 2.4650

4 0
2 years ago
The value of n is both 5 times as much as the value of m and 36 more than the value of m. What are the values of n and m? Explai
tia_tia [17]
N = 5m
n = m + 36

since n is equal to both the expression in m we can say:-

5m = m + 36
4m=36

m = 9 

and n = 5*9 = 45

3 0
3 years ago
Use a property of equality to solve this equation 4.5x=18
algol13

Answer:

x=4

Step-by-step explanation:

8 0
3 years ago
Moya picked 3 dozen apples she wents to share her apes in equal groups. show how many different way can she do this
lys-0071 [83]

Answer:

Groups of 12, Groups of 4, Groups of 6, Groups of 18

Step-by-step explanation:

12 x 3 = 36

36 splits evenly into 12, 4, 6, and 18 therefore that is your answer.

5 0
2 years ago
Other questions:
  • a brownie recipe requires two and two thirds cups of sugar to one cup of chocolate chips. If one and one third cups of sugar is
    5·1 answer
  • The number of cubic feet of water in a curved container can be approximated by v = 0.95h2.9. use a calculator to find the amount
    7·1 answer
  • A marketing firm tracks data on grocery store visits. In one study, it finds that the probability that a shopper buys bread duri
    15·2 answers
  • Find the equation of this line.<br>HELP​
    13·1 answer
  • Find the solution of the system of equations.<br> 10x + y = 16<br> -10x + 5y = 50
    5·1 answer
  • In January the students in a class red 72 books in February they read 56 books what is the approximate percentage decrease in th
    9·1 answer
  • I need help with solving this question with the elimination method since my teacher didn’t explain lol
    5·1 answer
  • Guided Practice
    9·1 answer
  • The x-variable goes on the<br> axis, and the<br> y-variable goes on the<br> _ axis.
    15·2 answers
  • Select the two pairs of figures that are similar.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!