Question

1. A researcher for a technology company wondered if people in California were quicker or slower to buy the latest version of a smartphone than the rest of the United States. This researcher obtained a sample of 270 Californians who owned a smartphone; she found the average number of days they waited to buy the latest version of a popular smartphone to be 4. Smartphone owners in the rest of the country typically wait 6 days, with a standard deviation of 2 Conduct the appropriate statistical test to determine whether Californians differ from people in the United States in general. Report your results in APA format and interpret the findings.

Answer 1

Given that population mean = 6 with standard deviation = 2

sample mean = 4 and sample size n = 270

Hypotheses for the given scanario are

using z distribution for -16.43 test statistic, we get p value = 0.0000

we can see that p value is less than significance level. so we will reject the null hypothesis and we can conclude that the people in California were quicker or slower to buy the latest version of a smartphone than the rest of the United States

APA format result :- z obtained = -16.43, p < 0.05