Homework Answers
Z Score = (x-mean)/SD
= (80500-71420)/9470 = 0.96
Since picture is not very clear, options are not readable, so mark the answer with option nearest to 0.96
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2008 to the market has an average of 71 470 miles with a sample sandard ration...
According to the U.S. Federal Highway Adminisdatiol, the men number of miles driven annually in 2008...
According to the U.S. Federal Highway Adminisdatiol, the men number of miles driven annually in 2008 was 10,300. You believe that people are driving more today than in 2008. A simple random sample of 20 drivers yields an average of 11,400 highway miles driven last year. Assuming s-4.300, test your hypothesis at the α-10 level. a. What are the null and alternative hypotheses? b. What is the specific name of the hypotheses test you will carry out? c. What is...
solve both pls A survey is to be conducted to determine the average driving in miles...
solve both pls
A survey is to be conducted to determine the average driving in miles by MS dents. The investigator wants to know how are the sample should be taken to confidence interval on the true average within 1.5 miles. A similar study on the past found that the population standard deviation was 82 miles Bonus(5 points): A recent study of 750 Internet users in Europe found that 35% of Internet users were women. What is the 96% confidence...
The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large...
The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large community, realtors randomly sampled 28 bids from potential buyers to estimate the average loss in home value. The sample showed the average loss was $8053 with a standard deviation of $1477. In 2011, the average home in this region of the country lost $7750 in value. Was the community studied by the realtors unusual? Use a t-test to decide if the average loss observed...
The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large...
The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large community, realtors randomly sampled 3535 bids from potential buyers to estimate the average loss in home value. The sample showed the average loss was $8768 with a standard deviation of $1519. Complete parts a and b below. b) Find a 90% confidence interval for the mean loss in value per home. ($___ ,$___ ) (Round to the nearest whole number as needed.)
hat is the average miles per gallon (mpg) for all new hybrid small cars? Using Consumer...
hat is the average miles per gallon (mpg) for all new hybrid small cars? Using Consumer Reports, a random sample o f such vehicles gave an average of 35.7 mpg (a) Identify the variable miles per gallon O total miles O new hybrid small cars O all cars (b) Is the variable quantitative or qualitative? O both quantitative and qualitative O quantitative qualitative (c) What is the implied population? O all cars with average miles per gallon O all new...
The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with...
The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with σ ≈ 600 miles. Suppose that a random sample of 41 vehicles owned by residents of Chicago showed that the average mileage driven last year was 10.9 thousand miles. Does this indicate that the average miles driven per vehicle in Chicago is different from (higher or lower than) the national average? Use a 0.05 level of significance. What are we testing in this problem?...
The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with...
The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with σ ≈ 600 miles. Suppose that a random sample of 41 vehicles owned by residents of Chicago showed that the average mileage driven last year was 10.9 thousand miles. Does this indicate that the average miles driven per vehicle in Chicago is different from (higher or lower than) the national average? Use a 0.05 level of significance. What are we testing in this problem?...
The average kinetic energy of the molecules in a gas sample depends only on the temperature,...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT ms speed where R= 8.314 J/(mol-K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m2/s2). What is the rms speed of N, molecules at...
The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with σ ≈ 600 miles. Suppose tha...
The average annual miles driven per vehicle in the United States
is 11.1 thousand miles, with σ ≈ 600 miles. Suppose that a
random sample of 31 vehicles owned by residents of Chicago showed
that the average mileage driven last year was 10.8 thousand miles.
Does this indicate that the average miles driven per vehicle in
Chicago is different from (higher or lower than) the national
average? Use a 0.05 level of significance.
What are we testing in this problem?...
also find p value. During the winter of 2008-2009, the average ulity bil for nesidents of...
also find p value.
During the winter of 2008-2009, the average ulity bil for nesidents of a cetai sample standand deviation of $22 02 Complete parts a and b below Determine the hypotheses OA Ho' μ2176 and H' : P<176 OC. Ho: μ 176 and HcF-176 OD, Ho : μ s 170 and H, : μ>176 Debermine the ortical values) (Round t Determine the est statistc to three decimal places as needed. Use a comma to separate answers as needed)...
According to the U.S. Federal Highway Adminisdatiol, the men number of miles driven annually in 2008 was 10,300. You believe that people are driving more today than in 2008. A simple random sample of 20 drivers yields an average of 11,400 highway miles driven last year. Assuming s-4.300, test your hypothesis at the α-10 level. a. What are the null and alternative hypotheses? b. What is the specific name of the hypotheses test you will carry out? c. What is...
solve both pls
A survey is to be conducted to determine the average driving in miles by MS dents. The investigator wants to know how are the sample should be taken to confidence interval on the true average within 1.5 miles. A similar study on the past found that the population standard deviation was 82 miles Bonus(5 points): A recent study of 750 Internet users in Europe found that 35% of Internet users were women. What is the 96% confidence...
hat is the average miles per gallon (mpg) for all new hybrid small cars? Using Consumer Reports, a random sample o f such vehicles gave an average of 35.7 mpg (a) Identify the variable miles per gallon O total miles O new hybrid small cars O all cars (b) Is the variable quantitative or qualitative? O both quantitative and qualitative O quantitative qualitative (c) What is the implied population? O all cars with average miles per gallon O all new...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT ms speed where R= 8.314 J/(mol-K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m2/s2). What is the rms speed of N, molecules at...
The average annual miles driven per vehicle in the United States
is 11.1 thousand miles, with σ ≈ 600 miles. Suppose that a
random sample of 31 vehicles owned by residents of Chicago showed
that the average mileage driven last year was 10.8 thousand miles.
Does this indicate that the average miles driven per vehicle in
Chicago is different from (higher or lower than) the national
average? Use a 0.05 level of significance.
What are we testing in this problem?...
also find p value.
During the winter of 2008-2009, the average ulity bil for nesidents of a cetai sample standand deviation of $22 02 Complete parts a and b below Determine the hypotheses OA Ho' μ2176 and H' : P<176 OC. Ho: μ 176 and HcF-176 OD, Ho : μ s 170 and H, : μ>176 Debermine the ortical values) (Round t Determine the est statistc to three decimal places as needed. Use a comma to separate answers as needed)...
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