Mathematics, 10.11.2019 04:31 gunner20115
Previously, an organization reported that teenagers spent an average of 4.1 hours per week, on average, on the phone. the organization thinks that, currently, the mean is higher. fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. the sample mean was 5.25 hours with a sample standard deviation of 2.0. what are the null and alternate hypotheses?
Answers: 2
Mathematics, 21.06.2019 19:30
Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?
Answers: 1
Mathematics, 21.06.2019 20:30
3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.
Answers: 1
Mathematics, 22.06.2019 00:00
Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)
Answers: 3
Previously, an organization reported that teenagers spent an average of 4.1 hours per week, on avera...
Mathematics, 24.03.2021 01:00
History, 24.03.2021 01:00
History, 24.03.2021 01:00
Biology, 24.03.2021 01:00
Advanced Placement (AP), 24.03.2021 01:00
English, 24.03.2021 01:00
Mathematics, 24.03.2021 01:00
Mathematics, 24.03.2021 01:00
Mathematics, 24.03.2021 01:00
Mathematics, 24.03.2021 01:00
Mathematics, 24.03.2021 01:00
Mathematics, 24.03.2021 01:00