Mathematics, 15.11.2019 04:31, michaelandtammytrice
According to a marketing research study, american teenagers watched 16.5 hours of social media posts per month last year, on average. a random sample of 20 american teenagers was surveyed and the mean amount of time per month each teenager watched social media posts was 17.3. this data has a sample standard deviation of 2.1. (assume that the scores are normally distributed.)
researchers conduct a one-mean hypothesis at the 10% significance level to test if the mean amount of time american teenagers watch social media posts per month is greater than the mean amount of time last year.
which answer choice shows the correct null and alternative hypotheses for this test?
select the correct answer below:
h0: μ=17.3; ha: μ< 17.3, which is a left-tailed test.
h0: μ=17.3; ha: μ> 17.3, which is a right-tailed test.
h0: μ=16.5; ha: μ< 16.5, which is a left-tailed test.
h0: μ=16.5; ha: μ> 16.5, which is a right-tailed test.
Answers: 1
Mathematics, 21.06.2019 18:30, PineaPPle663
Which one ? is the answer and how to find this answer
Answers: 2
Mathematics, 21.06.2019 23:40, amandaelisantos
In the diagram, a building cast a 35-ft shadow and a flagpole casts an 8-ft shadow. if the the flagpole is 18 ft tall, how tall is the building? round the the nearest tenth.
Answers: 2
Mathematics, 22.06.2019 02:00, cuhh
Which of the following is a cost homeowners insurance does not protect? a. the cost of repair or replacement of a home lost in a natural disaster. b. additional living expenses required while your home is repaired after a disaster. c. replacement costs for all contents in your home, including high cost electronics. d. the cost of medical expenses incurred by somebody getting injured on your property. select the best answer from the choices provided
Answers: 3
According to a marketing research study, american teenagers watched 16.5 hours of social media posts...
History, 05.12.2020 20:40
English, 05.12.2020 20:40
Computers and Technology, 05.12.2020 20:40
Business, 05.12.2020 20:40
Mathematics, 05.12.2020 20:40
Biology, 05.12.2020 20:40
Physics, 05.12.2020 20:40