A town official claims that the average vehicle in their area sells for more than the...

A town official claims that the average vehicle in their area sells for more than the 40th percentile of your data set. Using the data, you obtained in week 1, as well as the summary statistics you found for the original data set (excluding the super car outlier), run a hypothesis test to determine if the claim can be supported. Make sure you state all the important values, so your fellow classmates can use them to run a hypothesis test as well. Use alpha = .05 to test your claim. (Note: You will want to use the function =PERCENTILE.INC in Excel to find the 40th percentile of your data set) First determine if you are using a z or t-test and explain why. Then conduct a four-step hypothesis test including a sentence at the end justifying the support or lack of support for the claim and why you made that choice

Price
43300
22795
33700
24885
42500
25950
26645
25190
25050
25300

N				10
Sample Mean				29531.5
STDV				7601.882

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A town official claims that the average vehicle in their area sells for more than the...

A town official claims that the average vehicle in their area sells for more than the 40th percentile of your data set. Using the data below, run a hypothesis test to determine if the claim can be supported. State all the important values. Use alpha = .05 to test your claim. Wrangler Rubicon $39,440.00 Renegade Trail Hawk $27,940.00 Grand Cherokee Summit $22,795.00 TT $54,795.00 Tahoe $54,295.00 4Runner $46,780.00 Blazer Premier $43,849.00 Aventador $536,347.00 Range Rover Sport $70,102.00 Uras $200,000.00

A Realtor claims that no more than half of the homes he sells are sold for...

A Realtor claims that no more than half of the homes he sells are sold for less than the asking price. When reviewing a random sample of 16 sales over the past year, he found that actually 13 were sold below the asking price. (a) The assumption of normality is justified. Yes No (b-1) Calculate a p-value for the observed sample outcome, using the normal distribution. (Round your z-value to 2 decimal places. Round your answer to 4 decimal places.)...

A survey claims that the average cost of a hotel room in Atlanta is more than...

A survey claims that the average cost of a hotel room in Atlanta is more than $125.50 per night. To test this claim, a researcher selects a random sample of 55 hotel rooms and finds that the mean cost per night is $130.75. The standard deviation of the population, σ, is known to be $2.50. At a = 0.05, is there enough evidence to support the claim? Use the P-Value Method of Testing. In your work space below, you will...

A business students claims that on average an MBA students is required to prepare more than...

A business students claims that on average an MBA students is required to prepare more than five cases per week. To examine the claim, a statistics professor ask a random sample of ten MBA students to report the number of cases they prepare weekly. The results are given below. Can the professor conclude that the claim is true, at the .05 level of significance, assuming the number of cases is normally distributed with a standard deviation of 1.5? 2 7...

A laboratory technician claims that on average it takes her no more than 7.5 minutes to...

A laboratory technician claims that on average it takes her no more than 7.5 minutes to perform a certain task. A random sample of 20 times she performed this task was selected and the average and standard deviation were 7.9 and 1.2, respectively. At α = 0.05, does this constitute enough evidence against the technician's claim? Use the rejection point method.

A diet doctor claims Australians are, on average, overweight by more than 10kg. To test this...

A diet doctor claims Australians are, on average, overweight by more than 10kg. To test this claim, a random sample of 100 Australians were weighed, and the difference between their actual weight and their ideal weight was calculated and recorded. The data are contained in the Excel file Weights.xlsx. Use these data to test the doctor's claim at the 5% level of significance. Excess weight (Kgs) 16.0 4.0 4.0 4.5 11.0 7.0 7.0 16.5 14.5 5.5 16.5 0.5 13.5 26.0...

A hunter claims that the average deer is more than 200 pounds. To test his claim,...

A hunter claims that the average deer is more than 200 pounds. To test his claim, a random sample of 20 deer were weighed. The data are listed here. Do these data allow us to infer at the 5% significance level that the hunter’s claim is true? 160 230 180 410 220 180 230 190 220 150 180 350 160 150 170 190 230 150 160 260

A diet doctor claims that the average North American is more than 20 pounds overweight. To...

A diet doctor claims that the average North American is more than 20 pounds overweight. To test his claim, a random sample of 20 North Americans was weighed, and the difference between their actual and ideal weights was calculated. The data are listed here. Do these data allow us to infer at the 5% significance level that the doctor’s claim is true? 16 23 18 41 22 18 23 19 22 15 18 35 16 15 17 19 23 15...

A tax preparation firm claims that the average savings from their tax review is more than...

A tax preparation firm claims that the average savings from their tax review is more than $2,500. if we wish to evaluate this claim through hypothesis testing the proper hypothesis statement is Ho: u (=, >, <, >=, <=, not=) 2500 H1: u (=, >, <, >=, <=, not=) 2500

A new weight-loss program claims that participants will lose an average of more than 10 pounds...

A new weight-loss program claims that participants will lose an average of more than 10 pounds after completing it. The accompanying data table shows the weights of eight individuals before and after the program. Complete parts (a) through (e) below. Person Before After 1 226 203 2 213 195 3 206 195 4 186 173 5 204 195 6 199 181 7 243 232 8 191 193 . a. Perform a hypothesis test using alphaαequals=0.10 to determine if the average...

Subjects