Mathematics, 23.04.2020 03:02 MoneyMike42
The American Academy of Periodontology released a survey, revealing that 27% of US adults admit they lie to their dentist about how often they floss their teeth. Periodontist Dr. Garcia believes that the percentage seems low, so he decides to conduct his own hypothesis test to determine the true proportion. What should he write as the null and alternative hypotheses for this situation?
H0: p = 0.27; Ha: p > 0.27
H0: p = 0.27; Ha: p < 0.27
H0: p = 0.27; Ha: p ≠0.27
H0: μ = 0.27; Ha: μ > 0.27
H0: μ = 0.27; Ha: μ < 0.27
Answers: 1
Mathematics, 21.06.2019 17:30
33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.
Answers: 1
Mathematics, 21.06.2019 22:30
Which of the functions below could have created this graph?
Answers: 1
Mathematics, 21.06.2019 23:10
Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth
Answers: 2
The American Academy of Periodontology released a survey, revealing that 27% of US adults admit they...
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