# Question: According to HowtoAdvice com the average price charged to a customer

According to HowtoAdvice.com, the average price charged to a customer to have a 12' by 18' wall-to-wall carpet shampoo cleaned is about $50.Suppose that a start-up carpet-cleaning company believes that in the region in which it operates, the average price for this service is higher. To test this hypothesis, the carpet-cleaning company randomly contacts 23 customers who have recently had a 12' by 18' wall-to-wall carpet shampoo cleaned and asks the customers how much they were charged for the job. Suppose the resulting data are given below and that the population standard deviation price is $3.49.Use a 10% level of significance to test the hypothesis. Assume that such prices are normally distributed in the population.

What is the observed value? What is the p-value? What is the decision? If the null hypothesis is rejected, is the resultsubstantive?

What is the observed value? What is the p-value? What is the decision? If the null hypothesis is rejected, is the resultsubstantive?

## Relevant Questions

The American Water Works Association estimates that the average person in the United States uses 123 gallons of water per day. Suppose some researchers believe that more water is being used now and want to test to determine ...A hole-punch machine is set to punch a hole 1.84 centimeters in diameter in a strip of sheet metal in a manufacturing process. The strip of metal is then creased and sent on to the next phase of production, where a metal rod ...Suppose you are testing H0: p = .45 versus Ha: p > .45.A random sample of 310 people produces a value of p̂ = .465. Use α = .05 to test this hypothesis.Where do CFOs get their money news? According to Robert Half International, 47% get their money news from newspapers, 15% get it from communication/colleagues, 12% get it from television,11% from the Internet,9% from ...An alternative hypothesis is that p < .65. To test this hypothesis, a random sample of size 360 is taken. What is the probability of committing a Type II error if α = .05 and the alternative proportion is as follows?a. pa = ...Post your question