Hypothesis test for the difference of population means: Paired comparisons
Attached is 2 slides on powerpoint. The 1st slide is the problem and the 2nd slide is the answer format. Answer 3 is completed because it requires the use of a t test with degree of freedom that equals 11.
Attached also is the excel data
Please help with 1,2,4,5 and 6 only
1) eg: u=0 or u>0 etc
2) same as 1
3) answered already
4) test statistic
5) criticlal value
6) Yes or No
The owner of a chain of mini-marktes wants to compare the saled performance of two her stores. Store 1 and Store 3. Though the two stores have been comparable in the past, the owner has made several improvements to Store 2 and wishes to see if the improvements have made store 2 more popular than store 1. sales can vary considerably depending on the day of the week and the season of the year, so she decides to elinimate such effects by making sure to record each stores' sales on the same sample of days. After choosing a random sample of 12 days, she records the sales for each store on these days, as shown in table 1.
Based on these data, can the owner conclude, at the 0.01 level of significance, that the mean daily sales of store 2 exceeds that of store 1?
A hypothesis test is applied for the difference of population means. The solution is detailed and was rated '5/5' by the student who posted the question orignally.
...test for the difference of population means: Paired comparisons A personal ... Worker Process 1 Process 2 Difference. ... this question by performing a hypothesis test. ...
... evidence of a significant difference in the ... Tailed Version of the Paired Differences Hypothesis Test on Formula ... necessary about the population distribution in ...
... of the population variance, (c) compute the test statistic, (d) state your decision about the null hypothesis, and (e ... The null and alternate hypotheses are: ...
... The null hypothesis tested is H0: The average of contamination ... Rejection criteria: Reject the null hypothesis if the ... t-Test: Paired Two Sample for Means. ...
... The quiz covers introductory hypothesis testing. ... If the null hypothesis is true, the test statistic has an F ... in each of the 12 stores, then do a t-test on the ...
... 1 manufacturing process, and the consumer group is testing to see ... Perform a one-tailed test. ... State the null hypothesis: The null hypothesis tested is H0: There ...
... State the appropriate null and alternative hypotheses.(b) Interpret ... Rejection criteria: Reject the null hypothesis, if the ... t Test for Differences in Two Means. ...
... of 0.01, test the null hypothesis that the ... the following: What are the null and alternative hypotheses? ... Determine the appropriate test statistic and determine ...
... The null and alternate hypotheses are: ... Value -2.55238 p -Value 0.244445 Do not reject the null hypothesis. ... t Test for Differences in Two Means Data Hypothesized ...
... Since F test statistical value is 0.79 which is smaller ... group's population mean if the null hypothesis of no ... we have performed all the t-tests with respect to ...