a)
is the hypothesis to determine whether the selling price of a used car and age are linearly related.
b) Value of T statistic = 28.456
need answer for this question In order to examine the relationship between the selling price of a used car and its age, an analyst uses data from 25 recent transactions and estimates Price...
It is advertised that the average braking distance for a small car traveling at 70 miles per hour equals 120 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 32 small cars at 70 miles per hour and records the braking distance. The sample average braking distance is computed as 115 feet. Assume that the population standard deviation is 21 feet. (You may find it useful to reference the...
In order to conduct a hypothesis test for the population proportion, you sample 320 observations that result in 128 successes.(You may find it useful to reference the appropriate table: z table or t table HO pz 0.45; HA: p < 0.45. a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) est statistic a-2. Find the p-value....
In order to conduct a hypothesis test for the popufation proportion, you sample 320 observations that result in 128 successes Use the p-value approach to conduct the following tests at 0° 0 05 Use Table 1 Ho, p2045; H, p<045 a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.) Test statistic a-2. The p-value is: (Round p value to 4 decimal places.) O p-value <...
It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 34 small cars at 65 miles per hour and records the braking distance. The sample average braking distance is computed as 116 feet. Assume that the population standard deviation is 22 feet. (You may find it useful to reference the...
In order to conduct a hypothesis test for the population proportion, you sample 440 observations that result in 220 successes. (You may find it useful to reference the appropriate table: z table or t table Ho: p 0.52; HA: P 0.52 a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic a-2. Find the p-value....
In order to conduct a hypothesis test for the population proportion, you sample 480 observations that result in 264 successes. (You may find it useful to reference the appropriate table: z table or t table) Ho: p0.60; HA:P 0.60 a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic a-2. Find the p-value. O p-value...
The owner of Maumee Motors wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at Maumee Motors during the last year: Car Age (years) Selling Price ($ thousands) Car Age (years) Selling Price ($ thousands) 1 5 $3.2 7 5 $6.2 2 5 6.7 8 4 7.5 3 6 5.4 9 2 7.1 4 14 5.6 10 15 8.2 5 10 3.6 11...
The owner of Maumee Motors wants to study the relationship between the age of a car and its selling price Listed below is a random sample of 12 used cars sold at Maumee Motors during the last year. Selling Price (5 Car Age (years) thousands) Selling Price Car Age (years) (5 thousands) 1 13 $9.0 7 2 14 5.1 8 5 9 8.1 9 12 14 3.1 10 5 8.2 8.5 11 12 12 2 4.5 8 $9.1 3 4...
It is advertised that the average braking distance for a small car traveling at 70 miles per hour equals 120 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 35 small cars at 70 miles per hour and records the braking distance. The sample average braking distance is computed as 113 feet. Assume that the population standard deviation is 22 feet. (You may find it useful to reference the...
In order to conduct a hypothesis test for the population proportion, you sample 300 observations that result in 111 successes. (You may find it useful to reference the appropriate table: z table or t table) HO : p o.41; HA p< 0.41. a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic a-2. Find the...