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
Stells [14]
3 years ago
8

When two customers enter the store together, what is the probability that at least one of them will make a purchase?

Mathematics
1 answer:
arsen [322]3 years ago
5 0

The probability is 1/2 or 50%.

Hope this helps :)

You might be interested in
Jodi and mariah are sisters. jodi is three years older than mariah. using one variable, write an expression to represent the sum
lapo4ka [179]
Mariah =X
Jodi= X+3

X+X+3= 2X+3
7 0
3 years ago
How to show the work for x4-y4
Juli2301 [7.4K]
I think you can solve it by
=(x^2 - y^2) *( x^2 + y^2)
= (x -y)*(x+y)*(x^2 + y^2)
6 0
3 years ago
Find the area 20 points!!!
Dmitriy789 [7]

Answer:

the answer would be 29 :)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted t
LekaFEV [45]

Answer:

The pvalue of the test is 0.0124 < 0.1, which means that there is sufficient evidence at the 0.1 level to support the testing firm's claim.

Step-by-step explanation:

An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating:

At the null hypothesis, we test if the mean is the same, that is:

H_0: \mu = 59.5

At the alternate hypothesis, we test that it is different, that is:

H_a: \mu \neq 59.5

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

59.5 is tested at the null hypothesis:

This means that \mu = 59.5

After testing 250 vans, they found a mean MPG of 59.2. Assume the population standard deviation is known to be 1.9.

This means that n = 250, X = 59.2, \sigma = 1.9

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{59.2 - 59.5}{\frac{1.9}{\sqrt{250}}}

z = -2.5

Pvalue of the test and decision:

The pvalue of the test is the probability of finding a mean that differs from 59.5 by at least 0.3, which is P(|Z|>-2.5), which is 2 multiplied by the pvalue of Z = -2.5.

Looking at the z-table, Z = -2.5 has a pvalue of 0.0062

2*0.0062 = 0.0124

The pvalue of the test is 0.0124 < 0.1, which means that there is sufficient evidence at the 0.1 level to support the testing firm's claim.

5 0
3 years ago
I need help with this slope proplems
Leto [7]

Answer:

Melissa = D

Victor = C

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • Complete the division problem by determining the number that should be placed in the box. Division bracket with 12 on the left,
    5·1 answer
  • The number of pencils sold varies directly as the cost.if 5 pencils cost $0.45,find the cost of 7 pencils.
    14·2 answers
  • What is 3819 divided by 19
    7·2 answers
  • Write a sentence to represent the equation 4m = -8.
    7·1 answer
  • A shipping box in the shape of a cube has an edge length of 8 inches. It can hold 8 mugs with no extra space between them. If th
    5·2 answers
  • Help me for a kith please
    8·2 answers
  • What is 8 time the square root of 6
    7·1 answer
  • Which is equivalent to 42x +49.
    13·2 answers
  • Ashley is making cookies for the party. Each batch of cookies takes 0.75 cup of sugar. If she
    7·1 answer
  • the radius of a circular disk is given as 30 cm with a maximum error in measurement of cm. use differentials to estimate the max
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!