At the .02 significance level can we conclude that the mean, Ask an Expert

Statistics

The customer service department claims that the mean time to correct a shipping error is 10 minutes. A random sample of 60 claims from company records showed the mean to be 9.2 minutes with a standard deviation of 4.7 minutes. At the .02 significance level can we conclude that the mean time to correcting a shipment is less than 10 minutes? Do the following:

a. State the null hypothesis and the alternate hypothesis
b. State the decision rule
c. Compute the value of the test statistic
d. What is your decision regarding Ho?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9446835

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

During a 52 week period a company paid overtime wages for

During a 52 week period a company paid overtime wages for 16 weeks and hired temporary help for 7 weeks. During 6 weeks the company paid overtime and hired temporary help (a) Are the events? "selecting a week that contai ...

Xyz corporations budgeted monthly sales are 10000 and they

XYZ Corporation's budgeted monthly sales are $10,000, and they are constant. Its customers pay as follows: 30% pay in the first month and take the 2% discount, while the remaining 70% pay in the month following the sale ...

How do you solve the following problem consider the

How do you solve the following problem: Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values with ace = 1. What is the probability of obtaining a t ...

Question a number of public policies related to alcohol

Question: A number of public policies related to alcohol consumption have been instituted over the past couple of decades in an attempt to limit the number of alcohol-related traffic fatalities. These policies include: • ...

Suppose the timing device used in the mens race failed to

Suppose the timing device used in the men's race failed to activate at the start of the race and instead began to record the times seconds into the race. Consider how the competitors' times would be affected. Would the s ...

A nutritional scientist wishes to study the effect of

A nutritional scientist wishes to study the effect of storage time on the amount of vitamin C (milligrams) contained in 50 gram freeze dried fruit packs when stored for one, one and a half and 2 years. Five fruit packs w ...

Blooper industries must replace its magnoosium purification

Blooper Industries must replace its magnoosium purification system. Quick & Dirty Systems sells a relatively cheap purification system for $15 million. The system will last 5 years. Do-It-Right sells a sturdier but more ...

Thirty-eight percent of consumers prefer to purchase

Thirty-eight percent of consumers prefer to purchase electronics online. You randomly select 16 consumers. Find the probability that the number who prefer to purchase electronics online is at most 5.

There are 20 total socks 10 white and 10 black this makes

There are 20 total socks, 10 white and 10 black. This makes 10 total matching pairs of 5 pair of white and 5 pair of black. If each time you pick a sock from the drawer a sock just like it magically replaces it, what is ...

Suppose the chance of selecting a female adult at random in

Suppose the chance of selecting a female adult at random in the population is exactly π= 0.5 (ie: 50%). What is the probability that I choose 10 adults at random and I get the number of females in the sample to be betwee ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert