Need to know how to calculate the p value
As this is an upper tailed test, for n - 1 = 24 degrees of freedom, we get from the t distribution tables that:
P( t24 > 1.02) = 0.159
Therefore 0.159 is the required p-value here.
Need to know how to calculate the p value A county is cos dering asng the...
Quiz: Chapter 7 Review Quiz Submit Quiz This Question: 1 pt 20 of 23 (10 complete) This Quiz: 23 pts possible A county is considering rasing the speed limit on a road because they claim that the mean speed of vehicles is greater than 35 miles per hour. A random sample of 20 vehicles has a mean speed of 38 miles per hour and a standard deviation of 5.2 miles per hour. At α = 0.10, do you have enough...
For the following cases, you may use either the P-value approach or the rejection region approach to present a full hypothesis test, including: Identifying the claim and H0 and Ha, Finding the appropriate standardized test statistic, Finding the P-value or the rejection region, Deciding whether to reject or fail to reject the null hypothesis, and Interpreting the decision in the context of the original claim. A city planner claims that the mean speed of westbound traffic along a road segment...
A county is considering rasing the speed limit on a road because they claim that the mean speed of vehicles is greater than 40 miles per hour. A random sample of 20 vehicles has a mean speed of 42 miles per hour and a standard deviation of 4.3 miles per hour. At α=0.05, do you have enough evidence to support the county's claim? Complete parts (a) through (d) below.(a) Write the claim mathematically and identify Upper H 0H0 and Upper...
3, Hypothesis testing for the mean (gis known) Find the P-value for a two-tailed hypothesis test with a standardized test statistic of z 1.64. Decide whether to reject Ho when the level of significance is α a. 0.10. b. Find the P-value for a right-tailed hypothesis test with a standardized test statistic of z 1.64. Decide whether to reject Ho when the level of significance is a0.10. Homeowners claim that the mean speed of automobiles traveling on their street is...
Question 43,7.3.21 Question Help * over age 25 without a high school diploma is $22.350. The annual pay for a random sample oftOfulltime male workers over age 25 without a high schooldploma is listed. At α-O test the daim that the mean salary is $22.350. Assume the lation is normaly 20,659 21,136 22.359 21.32 22.971 16.912 ,158 23.190 2,186 28.286 OD, Ho: μ . 22.350 26.286 19,158 24,186 УЕ Но: 22.350 Ha: μ # 22.350 OF. Ho: 22.350 Ha: μ<22.350...
A statistical program is recommended. A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized: у %3DВо + В,х +е where y traffic flow in vehicles per hour x = vehicle speed in miles per hour The following data were collected during rush hour for six highways leading out of the city Traffic Flow Vehicle Speed (x) (y) 1,257 35 40 1,327 1,226 30 1,333 45 50 1,350 1,122 25 In working...
a.) what is the claim? identify H0 and Ha b.) find the critical values and rejection region c.) find the standarized test statistic z An energy company wants to choose between two regions in a state to install new producing wind turbines Aresearcher claims that the wind speed in Region Ais less than the wind speed in Region B. To test the regions, the average wind speed is calculated for 60 days in each region. The mean wind speed in...
3. -/3 points MINTROSTAT9 6.E.075. My Notes Ask Your Teacher v Computers in some vehicles calculate various quantities related to performance. One of these is the fuel efficiency, or gas mileage, usually expressed as miles per gallon (mpg). For one vehicle equipped in this way, the miles per gallon were recorded each time the gas tank was filled, and the computer was then reset. In addition to the computer's calculations of miles per gallon, the driver also recorded the miles...
Need help with the value of the test statistic, the critical value and the p value. Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. A government set a safety limit for cadmium in dry vegetables at 0.5 parts per million (ppm). The cadmium levels in a random sample of one species of edible mushroom are in the accompanying data set. At the 10% significance level, do the data...
To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a safety engineer conducts braking tests for 35 models of Make A and 35 models of Make B. The mean braking distance for Make A is 42 feet. Assume the population standard deviation is 4.6 feet. The mean braking distance for Make B is 43 feet. Assume the population standard deviation is 4.2 feet. At a = 0.10, can the engineer support...