Mathematics, 10.04.2020 04:57 rleiphart1
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: 2
Mathematics, 21.06.2019 16:00, choyontareq
The step function g(x) is defined as shown. what is the range of g(x)? ***answer choices in picture.
Answers: 3
Mathematics, 21.06.2019 21:30, kameronstebbins
High school seniors with strong academic records apply to the nation’s most selective colleges in greater numbers each year. because the number of slots remains relatively stable, some colleges reject more early applicants. suppose that for a recent admissions class, an ivy league college received 2851 applications for early admission. of this group, it admitted 1033 students early, rejected 854 outright, and deferred 964 to the regular admission pool for further consideration. in the past, this school has admitted 18% of the deferred early admission applicants during the regular admission process. counting the students admitted early and the students admitted during the regular admission process, the total class size was 2375. let e, r, and d represent the events that a student who applies for early admission is admitted early, rejected outright, or deferred to the regular admissions pool. suppose a student applies for early admission. what is the probability that the student will be admitted for early admission or be deferred and later admitted during the regular admission process?
Answers: 3
Mathematics, 21.06.2019 22:40, Savannahh8503
Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.
Answers: 3
Mathematics, 22.06.2019 01:00, jasminebrown72
Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay
Answers: 1
According to a marketing research study, American teenagers watched 16.5 hours of social media posts...
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