MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
Bartleby Related Questions Icon

Related questions

Q: Two numbers sum to 43. Twice the first subtracted from the second is 7. Find the numbers.
A:
Q: Please I need help with this question: look at the equation select all the solutions to the…
A:
Q: O 6 yellow marbles 5 Which equation matches the picture? O I|- 10= I O 7-4 = 3 O I1-4=7 Spiral…
A:
Q: 9. 14s + 35s = 7s + 42 Answer :
A: Let's solve given question.(1st for s and 2nd for n)
Q: a X d b C If angle c measures 4x degrees, and angle b is 168 degrees, what is x?
A: Given query is to find the measure of x.
Q: v2 B. Simplify (Give EXACT answer) V3 2
A:
Q: A D в C
A:
Q: Hi I need help solving this problem !
A:
Q: Find the unknown values. 100 x 30+4x 7x %3D
A: Given:
Q: X – 20 \x a
A: GIVENSTRAIGHT ANGLE
Q: Solve the equation. 6. +6 x-6 x-6
A:
Q: A I= D B If angle A measures 4x + 125 degrees, and angle D is 7x degrees, what is ï?
A:
Question

Only Question 7 i need the answer 

 
 
 
### Problem 4 It has been accepted that 40% or less of households changed their driving habits because of escalating gas prices. However, a popular energy company challenges that more than 40% of households have changed their driving habits because of escalating gas prices. Their recent survey of 180 households finds that 70 households have made lifestyle changes due to escalating gas prices. At a 10% level of significance, test the energy company's challenge. #### Hypotheses - \( H_0: p \leq 0.40 \) - \( H_a: p > 0.40 \) #### Calculations - \( x = 70 \) - \( n = 180 \) - \( \hat{p} = \frac{70}{180} = 0.3889 \) - \( z = \frac{0.3889 - 0.40}{\sqrt{\frac{0.40 \times 0.60}{180}}} = -0.31 \) #### Normal Curve Representation The curve shows a normal distribution with the rejection region marked in the right tail. The critical z-value (\( Z_{crit} \)) is 1.28 for a significance level (\( \alpha \)) of 0.10. #### Decision \( Z_{stat} = -0.31 \). Since \( Z_{stat} < Z_{crit} \), fail to reject \( H_0 \). - p-value = 0.3783 ### Problem 5 Every year, the Hometown Hardware Store expects an average of $606.40 per local family to be spent on springtime home repairs. A new analyst in the store disputes this and challenges that the average spending per local family will differ from this amount. A test is conducted on a random sample of 30 households, using a 90% confidence level, resulting in a sample mean of $632.85. The spending is normally distributed with a population standard deviation of $65. #### Hypotheses - \( H_0: \mu = 606.40 \) - \( H_a: \mu \neq 606.40 \) #### Calculations - \( \mu = 632.85 \) - \( \sigma = 65 \) - \( n = 30 \) - Standard Error = \( \frac{65}{\sqrt{30}} \) - \( z
expand button
Transcribed Image Text:### Problem 4 It has been accepted that 40% or less of households changed their driving habits because of escalating gas prices. However, a popular energy company challenges that more than 40% of households have changed their driving habits because of escalating gas prices. Their recent survey of 180 households finds that 70 households have made lifestyle changes due to escalating gas prices. At a 10% level of significance, test the energy company's challenge. #### Hypotheses - \( H_0: p \leq 0.40 \) - \( H_a: p > 0.40 \) #### Calculations - \( x = 70 \) - \( n = 180 \) - \( \hat{p} = \frac{70}{180} = 0.3889 \) - \( z = \frac{0.3889 - 0.40}{\sqrt{\frac{0.40 \times 0.60}{180}}} = -0.31 \) #### Normal Curve Representation The curve shows a normal distribution with the rejection region marked in the right tail. The critical z-value (\( Z_{crit} \)) is 1.28 for a significance level (\( \alpha \)) of 0.10. #### Decision \( Z_{stat} = -0.31 \). Since \( Z_{stat} < Z_{crit} \), fail to reject \( H_0 \). - p-value = 0.3783 ### Problem 5 Every year, the Hometown Hardware Store expects an average of $606.40 per local family to be spent on springtime home repairs. A new analyst in the store disputes this and challenges that the average spending per local family will differ from this amount. A test is conducted on a random sample of 30 households, using a 90% confidence level, resulting in a sample mean of $632.85. The spending is normally distributed with a population standard deviation of $65. #### Hypotheses - \( H_0: \mu = 606.40 \) - \( H_a: \mu \neq 606.40 \) #### Calculations - \( \mu = 632.85 \) - \( \sigma = 65 \) - \( n = 30 \) - Standard Error = \( \frac{65}{\sqrt{30}} \) - \( z
Expert Solution
Check Mark
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
See solutionCheck out a sample Q&A here
Step 1: Solution:
VIEW
Step 2: Critical values.
VIEW
Solution
VIEW
bartleby

Step by stepSolved in 3 steps with 2 images

See solution
Check out a sample Q&A here
Blurred answer
Knowledge Booster
Background pattern image
Similar questions
Recommended textbooks for you
Text book image
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Text book image
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Text book image
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Text book image
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
Text book image
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Text book image
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman
SEE MORE TEXTBOOKS