A study was conducted to see whether monetary incentives to use less water durin

Question

A study was conducted to see whether monetary incentives to use less water during times of drought had an effect on water usage. Sixty single family homeowners were randomly assigned to one of two groups: 1) monetary incentives and 2) no monetary incentives. At the end of three months, the total amount of water usage for each household, in gallons, was measured. (MUST SHOW WORK OR CALCULATION METHOD USED)

(a) What would be the appropriate hypothesis test to use to test the claim that monetary incentives reduce water usage?

i. t-test for two independent samples

ii. t-test for dependent samples

iii. z-test for population mean

iv. correlation

(b) Explain the rationale for your selection in (a). Specifically, why would this be the appropriate statistical approach?

Explanation / Answer

From the information, observe that a study was conducted to see whether monetary incentives to use less water during times of drought had an effect of water usage.

Consider a single 60 family home owners.

a)

Use t test for two dependent samples.

Hence, the correct option is (iii).

b)

Since the both samples are taken in same object like water usage.

There is an association between both samples.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.