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
Marrrta [24]
3 years ago
7

Price per shirt: $5, $10, $15, $20, $25

Mathematics
1 answer:
I am Lyosha [343]3 years ago
4 0
I think you have to notice the pattern first. For every number of t-shirt sales, the cost is half of that. So, I think the expected number of t-shirt sales would be 60 for $30.
You might be interested in
An article in Fire Technology investigated two different foam-expanding agents that can be used in the nozzles of firefighting s
UNO [17]

Answer:

Step-by-step explanation:

Hello!

The objective of this experiment is to test if two different foam-expanding agents have the same foam expansion capacity

Sample 1 (aqueous film forming foam)

n₁= 5

X[bar]₁= 4.7

S₁= 0.6

Sample 2 (alcohol-type concentrates )

n₂= 5

X[bar]₂= 6.8

S₂= 0.8

Both variables have a normal distribution and σ₁²= σ₂²= σ²= ?

The statistic to use to make the estimation and the hypothesis test is the t-statistic for independent samples.:

t= \frac{(X[bar]_1 - X[bar]_2) - (mu_1 - mu_2)}{Sa*\sqrt{\frac{1}{n_1} + \frac{1}{n_2 } } }

a) 95% CI

(X[bar]_1 - X[bar]_2) ± t_{n_1 + n_2 - 2}*Sa* \sqrt{\frac{1}{n_1}+\frac{1}{n_2} }

Sa²= \frac{(n_1-1)S_1^2 + (n_2-1)S_2^2}{n_1 + n_2 - 2}= \frac{(5-1)0.36 + (5-1)0.64}{5 + 5 - 2}= 0.5

Sa= 0.707ç

t_{n_1 + n_2 -2: 1 - \alpha /2} = t_{8; 0.975} = 2.306

(4.7-6.9) ± 2.306* (0.707\sqrt{\frac{1}{5}+\frac{1}{5} })

[-4.78; 0.38]

With a 95% confidence level you expect that the interval [-4.78; 0.38] will contain the population mean of the expansion capacity of both agents.

b.

The hypothesis is:

H₀: μ₁ - μ₂= 0

H₁: μ₁ - μ₂≠ 0

α: 0.05

The interval contains the cero, so the decision is to reject the null hypothesis.

<u>Complete question</u>

a. Find a 95% confidence interval on the difference in mean foam expansion of these two agents.

b. Based on the confidence interval, is there evidence to support the claim that there is no difference in mean foam expansion of these two agents?

8 0
3 years ago
What is the median of 16, 20, 20, 23, 25, 27, 29, 31, 31, and 32.
seraphim [82]

Answer:

27

Step-by-step explanation:

The madian is gis

5 0
3 years ago
I will rate you brainliest
slava [35]

Answer:

(3x+11)/ (5x-9)

Step-by-step explanation:

The numerator is what is on the top of the bar in the middle

(3x+11)/ (5x-9)

7 0
3 years ago
Read 2 more answers
Which of the following factored forms given below represent the correct factorization of the trinomial x^2 + 10x + 16
valina [46]
It would be 2 since that would give you the trio mail if expanded
5 0
3 years ago
Read 2 more answers
Work out the area of the triangle.
sveta [45]

Answer:

120

Step-by-step explanation:

10*24=240

240/2=120

7 0
2 years ago
Other questions:
  • I need help on this problem
    7·2 answers
  • Help find the answer to what B is.
    15·1 answer
  • What are partial products of 1274x2=2548
    8·1 answer
  • A club of twenty students wants to pick a three person subcommittee. How many ways can this be done?
    11·1 answer
  • Stuart is buying a pair of jeans that regularly cost $40. They are on sale for 20% off. If the tax rate is 8%,what is the sale p
    6·1 answer
  • The standard normal curve shown below models the population distribution of a random variable. What proportion of the values in
    12·1 answer
  • Please someone help! Thank yOU!
    13·1 answer
  • Expand 5x(5y + 7)<br><br><br><br><br><br><br><br><br> ......
    14·2 answers
  • The question is in the picture- It's homework and it's due in a few minutes
    8·1 answer
  • Solve this equation what is 5/6+4/6=
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!