Mathematics, 18.03.2021 01:20 culbertchristi6111
The local public transport authority is conducting research into commuter behaviour. A previous census indicated that the mean commuter time was 45 minutes with a standard deviation of 9.1 minutes. After some recent infrastructure upgrades and a new train timetable, the transport authority would like to test whether average commuter time has decreased. A random sample of 50 commuter times has been collected.
49.9
43.8
41
45.6
38.7
43.6
42.9
48
39.3
50.9
44.4
37.3
30.7
39.7
51.6
40.6
46.9
61.3
50.6
47.2
53
44
44.4
47.8
35.5
46.8
50.1
37.5
38.4
48.6
32.7
50.8
38.8
49
43.5
37.6
31
49.3
46.9
42.7
47.6
41.1
53.2
41.5
45.3
51.2
42.9
43.6
41.6
49.3
Conduct a hypothesis test to test whether the new changes have decreased mean commuter time.1) From the following options, select the correct null and alternate hypotheses for this test:A. H0: μ = 45, Ha: μ > 45B. H0: μ > 45, Ha: μ = 45C. H0: μ = 45, Ha: μ < 45D. H0: μ = 45, Ha: μ ≠45
2) Calculate the test statistic.
3) Calculate the test statistic.
4) Therefore, at a significance level of 0.05 the null hypothesis is rejectednot rejected.
Answers: 1
Mathematics, 21.06.2019 18:30
Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa
Answers: 1
Mathematics, 21.06.2019 18:40
Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.
Answers: 3
Mathematics, 21.06.2019 19:50
Drag each tile into the correct box. not all tiles will be used. find the tables with unit rates greater than the unit rate in the graph. then tenge these tables in order from least to greatest unit rate
Answers: 2
The local public transport authority is conducting research into commuter behaviour. A previous cens...
English, 15.11.2020 03:40
Mathematics, 15.11.2020 03:40
Mathematics, 15.11.2020 03:40
Mathematics, 15.11.2020 03:50
History, 15.11.2020 03:50
Mathematics, 15.11.2020 03:50
Mathematics, 15.11.2020 03:50
English, 15.11.2020 03:50
Mathematics, 15.11.2020 03:50
Mathematics, 15.11.2020 03:50
Mathematics, 15.11.2020 03:50
Mathematics, 15.11.2020 03:50