A consumer group plans to test whether a new passenger car that is advertised to have...
A consumer group plans to test whether a new passenger car that is advertised to have a mean highway miles per gallon of at least 29 actually meets this level. They plan to test the hypothesis using a significance level of 0.05 and a sample size of n = 81 cars. It is believed that the population standard deviation is 5 mpg. Based upon this information, what is the critical value in terms of miles per gallon that would be needed prior to finding beta?
Cannot be determined without knowing the sample mean.
28.0861
29.913
-28
Homework Answers
Add Answer to:
A consumer group plans to test whether a new passenger car that
is advertised to have...
ILL UPVOTE 100%!!!!! Question 20 1 pts A consumer group plans to test whether a car...
ILL UPVOTE 100%!!!!!
Question 20 1 pts A consumer group plans to test whether a car gets at least 28 MPG. They will test the hypothesis using a significance level of 0.05 and a sample size of n = 121 cars. Assume the population standard deviation is 6 mpg. Based on this information, what is the critical value in terms of miles per gallon? © 27.1028 C Can't be determined without more information © 28.8601 C 26.3582
A consumer group plans to test whether a car gets at least 28 MPG. They will...
A consumer group plans to test whether a car gets at least 28 MPG. They will test the hypothesis using a significance level of 0.05 and a sample size of n = 121 cars. Assume the population standard deviation is 6 mpg and the sample resulted in a mean of 26.2 MPG. Calculate the test statistic. t= -3.3 t= -1.658 z= -1.645 z= -3.3
5. A consumer advocate group would like to disprove a car manufacturer's claim that a specific...
5. A consumer advocate group would like to disprove a car manufacturer's claim that a specific model will average 24 miles per gallon of gasoline The group took a random sample of 30 cars and obtained a sample mean of 23.2 mpg . Assume o = 2.9. a.) Construct a 95% C.I. for the mean mpg.
2. The manufacturer of a new model car (Camry) claims that a typical car get 26...
2. The manufacturer of a new model car (Camry) claims that a typical car get 26 miles per gallon. A consumer advocacy group is skeptical of this claim and thinks that the mean gas mileage, , of all Camrys may be less than 26 mpg. The group plans to perform the hypothesis test at a = 0.05, using a sample of 30 Camrys. Ho: u = 26 mpg Hu<26 mpg Find the probability of making a Type II error if...
A car dealer states that a new brand of car gets 35 miles per gallon on...
A car dealer states that a new brand of car gets 35 miles per gallon on average. Suppose a consumer group claims that these cars get less than 35 miles per gallon. A sample of 40 cars is selected, and the sample mean for the 40 cars is 33 miles per gallon while the sample standard deviation is 3.8. Have the assumptions for this test been met? Why or why not? State the null and alternative hypotheses for this test....
A consumer advocacy group claims that the mean mileage for the Company A's newsedan is less...
A consumer advocacy group claims that the mean mileage for the Company A's newsedan is less than 23 miles per gallon. What is the type I error for the test? Select one: a. Fail to reject the claim that the mean equals 23 miles per gallon when it is actually less than 23 miles per gallon. O b. Fail to reject the claim that the mean equals23 miles per gallon when it is actually greater than 23 miles per gallon....
Ford has developed a new hybrid car called the Fractal. 31 Fractal cars and 27 competitors...
Ford has developed a new hybrid car called the Fractal. 31 Fractal cars and 27 competitors cars were road tested to compare miles-per-gallon (mpg) performance. The sample statistics are shown in the table below: Sample 1 Sample 2 (competitior) 27 Sample size Sample mean Sample Standard deviation 31 33.0 mpg 31.0 mpg 20 mpg 2.5 mpg Can we conclude, using a 5% level of significan cer that the miles-per-gallon (mpg) performance of Fractal cars is greater than the miles-per gallon...
Problem 5. The mileage of a certain make of car may not be exactly that rated by the manufacturer. Suppose ten cars of the same model were tested for combined city and highway mileages, with the foll...
Problem 5. The mileage of a certain make of car may not be exactly that rated by the manufacturer. Suppose ten cars of the same model were tested for combined city and highway mileages, with the following results: 1 Car No. Observed Mileage 35 40 37 4232 43 38 32 41 34 (mpg) 1 23 4 56 78 9 10 a) Estimate the sample mean and standard deviation of the actual mileage of this particular make of car. Suppose that...
SAMPLING DISTRIBUTION The manufacturer of a new compact car claims the miles per gallon (mpg) for...
SAMPLING DISTRIBUTION The manufacturer of a new compact car claims the miles per gallon (mpg) for gasoline consumption is normally distribution with u = 26.3 mpg and standard deviation 6 = 9.0 mpg. A consumer agency is looking to verify the manufacturer's claim. If a sample of 36 cars are tested, what is the probability that the mean mpg 7 is (a) less than 23 mpg? (b) more than 29 mpg? (b) between 23 and 29 mpg?
i appreciate all the help! thank you so much 1 2 Entered Answer Preview Result -0.05...
i appreciate all the help! thank you so much
1
2
Entered Answer Preview Result -0.05 -0.05 incorrect -1.9599 -1.9599 correct -3.0619 -3.0619 correct B B correct At least one of the answers above is NOT correct. (1 point) it is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 150 cars is 29.1 miles and assume the standard deviation is 2.4...
ILL UPVOTE 100%!!!!!
Question 20 1 pts A consumer group plans to test whether a car gets at least 28 MPG. They will test the hypothesis using a significance level of 0.05 and a sample size of n = 121 cars. Assume the population standard deviation is 6 mpg. Based on this information, what is the critical value in terms of miles per gallon? © 27.1028 C Can't be determined without more information © 28.8601 C 26.3582
5. A consumer advocate group would like to disprove a car manufacturer's claim that a specific model will average 24 miles per gallon of gasoline The group took a random sample of 30 cars and obtained a sample mean of 23.2 mpg . Assume o = 2.9. a.) Construct a 95% C.I. for the mean mpg.
2. The manufacturer of a new model car (Camry) claims that a typical car get 26 miles per gallon. A consumer advocacy group is skeptical of this claim and thinks that the mean gas mileage, , of all Camrys may be less than 26 mpg. The group plans to perform the hypothesis test at a = 0.05, using a sample of 30 Camrys. Ho: u = 26 mpg Hu<26 mpg Find the probability of making a Type II error if...
A consumer advocacy group claims that the mean mileage for the Company A's newsedan is less than 23 miles per gallon. What is the type I error for the test? Select one: a. Fail to reject the claim that the mean equals 23 miles per gallon when it is actually less than 23 miles per gallon. O b. Fail to reject the claim that the mean equals23 miles per gallon when it is actually greater than 23 miles per gallon....
Ford has developed a new hybrid car called the Fractal. 31 Fractal cars and 27 competitors cars were road tested to compare miles-per-gallon (mpg) performance. The sample statistics are shown in the table below: Sample 1 Sample 2 (competitior) 27 Sample size Sample mean Sample Standard deviation 31 33.0 mpg 31.0 mpg 20 mpg 2.5 mpg Can we conclude, using a 5% level of significan cer that the miles-per-gallon (mpg) performance of Fractal cars is greater than the miles-per gallon...
Problem 5. The mileage of a certain make of car may not be exactly that rated by the manufacturer. Suppose ten cars of the same model were tested for combined city and highway mileages, with the following results: 1 Car No. Observed Mileage 35 40 37 4232 43 38 32 41 34 (mpg) 1 23 4 56 78 9 10 a) Estimate the sample mean and standard deviation of the actual mileage of this particular make of car. Suppose that...
SAMPLING DISTRIBUTION The manufacturer of a new compact car claims the miles per gallon (mpg) for gasoline consumption is normally distribution with u = 26.3 mpg and standard deviation 6 = 9.0 mpg. A consumer agency is looking to verify the manufacturer's claim. If a sample of 36 cars are tested, what is the probability that the mean mpg 7 is (a) less than 23 mpg? (b) more than 29 mpg? (b) between 23 and 29 mpg?
i appreciate all the help! thank you so much
1
2
Entered Answer Preview Result -0.05 -0.05 incorrect -1.9599 -1.9599 correct -3.0619 -3.0619 correct B B correct At least one of the answers above is NOT correct. (1 point) it is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 150 cars is 29.1 miles and assume the standard deviation is 2.4...
Most questions answered within 3 hours.
-
Oxidative phosphorylation is achieved through chemiosmotic
coupling, which turns chemical energy into osmotic potential energy
that...
asked 56 minutes ago -
Hollywood Shoes would like to maintain their cash account at a
minimum level of $64,000, but...
asked 54 minutes ago -
Proteins CtrA-P, DnaA, and GcrA behave similarly to what
molecule in the Eukaryotic Cell Cycle?
asked 58 minutes ago -
TRUE OR FALSE
In case of a competitive tender procedure, in the request for
quotation, the...
asked 1 hour ago -
I am a little behind please provide some explanation, will
provide thumbs up.
This question considers...
asked 1 hour ago -
Let say the utility function as U(X,Y) = lnX + Y. Show that the
marginal rate...
asked 1 hour ago -
A current of I=8.0A is flowing in a typical extension cord of
length L=3.00m. The cord...
asked 1 hour ago -
1. When balancing the equation H2SO4 (aq) + NaOH (aq) →
Na2SO4(aq) + H2O(aq), would you...
asked 1 hour ago -
Provide a definition of “classification hierarchy” and
illustrate your definition with an example of how and...
asked 1 hour ago -
1. Describe the four main green solvents. Provide one example of
the use of each solvent....
asked 1 hour ago -
International ethics focus on:
1) exploitation of labor
2)corruption
3) environmental impact
4) none of the...
asked 1 hour ago -
Costing Models You work for XYZ trucking and your boss has asked
you to figure out...
asked 1 hour ago