Is there evidence to reject claim at the alpha value

Reference no: EM13118815

A 20-minute Oil and Lube service claims that their average service time is no more than 20 minutes. A random sample of 40 service times was collected, and the sample mean was found to be 21.3 minutes, with a sample standard deviation of 5.5 minutes. Is there evidence to reject the claim at the alpha = 0.05 level? Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.

Reference no: EM13118815

Questions Cloud

Definitions of equation-inequalities and slopes : Define the term equation and then explain what it means to solve an equation. Give an example of an equation and its solution. Explain why it is the solution.

Elasticity of demand and total revenue : Explain the relationship between elasticity of demand and total revenue for the following ranges along the demand curve, using the attached Graphs for Elasticity of Demand, Total Revenue.

Determining total monthly cost : The equation C=mx+b can be used to model the monthly cost, C, of a cell phone plan where b is the flat monthly cost, m represents the cost in dollars per minute and x is the number of minutes used in the month.

Why the oxidase test identifies the presence of cytochrome : Provide a possible explanation as to why the oxidase test identifies the presence of cytochrome c oxidase and not other oxidases.

Is there evidence to reject claim at the alpha value : the sample mean was found to be 21.3 minutes, with a sample standard deviation of 5.5 minutes. Is there evidence to reject the claim at the alpha = 0.05 level?

Illustrate what is sams top speed : The skis have a thrust of 189 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately, the skis run out of fuel after only 9 s. Illustrate what is Sam's top speed?

Determine the best levels for each factor : Taguchi experiment is to be performed on the effects of lift, bore, stroke, and compression on engine performance with horsepower as the outcome variable. Determine the best levels for each factor and state your conclusions.

Find onfidence interval for mean amount spent by patients : Find a 95% confidence interval for the mean amount spent by patients at the pharmacy. Show your calculations and/or explain the process used to obtain the interval.

What would you expect the result to look like : Virtually all sulfur-reducing members of Enterbacteriaceae are motile. Suppose for a moment that you inoculate a SIM medium with an inole-producing sulfur reducer that is non motile. After completing all aspects of the test, what would you expect ..

User Account

All Pages