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
sesenic [268]
3 years ago
8

A wedding website states that the average cost of a wedding is $25,809. One concerned bride hopes that the average is less than

reported. To see if her hope is correct, she surveys 46 recently married couples and finds that the average cost of weddings in the sample was $24,638. Assuming that the population standard deviation is $5531, is there sufficient evidence to support the bride’s hope at the 0.10 level of significance?
Step 1 of 3 : State the null and alternative hypotheses for the test. Fill in the blank below.
H0Ha: μ=25,809: μ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯25,809
Step 2 of 3 : Find the test statistic
Step 3 of 3 : What is the conclusion?
Mathematics
1 answer:
lapo4ka [179]3 years ago
6 0

Answer:

1)

Null hypothesis            H₀ : μ = 25,809

Alternative hypothesis H₁ : μ < 25,809

2) Test Statistic = -1.44

3) Conclusion:

The result is significant, there is sufficient evidence to support the bride’s hope at the 0.10 level of significance.

Step-by-step explanation:

Given the data in the question;

Sample mean x" = 24,638

sample size n = 46

standard deviation σ = 5531

level of significance ∝ = 0.10

NULL and ALTERNATIVE HYPOTHESIS

Null hypothesis            H₀ : μ = 25,809

Alternative hypothesis H₁ : μ < 25,809

TEST STATISTICS

Z = (x"-μ) / σ√n

we substitute

Z = (24,638 - 25,809) / (5531/√46)

Z = -1171 / 815.5

Z = -1.44

Test Statistic = -1.44

Now, from normal z-table;

P-value = P( Z < -1.44 ) = 0.0749

P-value = 0.0749

Since P-value ( 0.0749 ) is less than level of significance ( 0.10 ), we reject H₀.

Conclusion:

The result is significant, there is sufficient evidence to support the bride’s hope at the 0.10 level of significance.

You might be interested in
How do you write 143% as a decimal
umka2103 [35]

Answer:

1.43

Step-by-step explanation:

1.43 or  1  43/100 turned into a percent is 143%

7 0
2 years ago
Read 2 more answers
Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y). x = y + 6 y = -2 - x
kenny6666 [7]
X=(-2-x)+6
x=4-x
2x=4
x=2
4 0
3 years ago
This table displays the height of water as a pool is being filled. A 2-column table with 4 rows. Column 1 is labeled Time (minut
Law Incorporation [45]

Answer:1. 0.35. 0.35

Step-by-step explanation:

I did the question on edgenuity

6 0
2 years ago
How are synthetic molecules and natural molecules different
Alborosie
One is significantly fatter than the other and has more friction
4 0
3 years ago
Elise walks diagonally from one corner of a square plaza to another. Each side of the plaza is 50 meters. What is the diagonal d
jolli1 [7]

Answer:

70.7 meters.

Step-by-step explanation:

We have been given that Elise walks diagonally from one corner of a square plaza to another. Each side of the plaza is 50 meters.

Since we know that diagonal of a square is product of side length of square and \sqrt{2}. So we will find diagonal of our given square plaza by multiplying 50 by \sqrt{2}.

\text{Diagonal distance across the plaza}=50\times \sqrt{2}

\text{Diagonal distance across the plaza}=50\times 1.414213562373095

\text{Diagonal distance across the plaza}=70.71067811865475\approx 70.7

Therefore, diagonal distance across the plaza is 70.7 meters.


8 0
3 years ago
Other questions:
  • If f(x) = -3x + 6 and f(x)=18<br> then what is the value of x?
    15·1 answer
  • What is the sum of the solutions for 6x^2 − x − 2 = 0?
    8·1 answer
  • What’s this answer ? Please help!
    8·1 answer
  • Just the last two ones please and thank you if you awnsered this
    7·1 answer
  • What is -3(-x+2y-5z)​
    13·1 answer
  • Enjoy your day!!!!!!!!!
    8·1 answer
  • Match the vocabulary to the part of expression below
    15·1 answer
  • Help pls i have 5 minss, no links
    10·2 answers
  • There are 10 girls and 15 boys in a committee of 5 selected at random find the probability that the committee has
    5·1 answer
  • Help plz first correct and best answer gets brainliest
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!