Mathematics, 16.12.2019 19:31 la200564
In the united states, there has historically been a strong relationship between smoking and education, with well-educated people less likely to smoke. to examine whether this pattern has changed, a sample of 459 men was selected at random from those who had visited a health center for a routine check-up over the course of the past year. education is classified into three categories corresponding to the highest level of education achieved, and smoking status is classified into four categories. smoking status education nonsmoker former moderate heavy total high school 56 54 41 36 187 college 37 43 27 32 139 graduate school 53 28 36 16 133 total 146 125 104 84 459which hypotheses are being tested by the chi-square test? the null hypothesis is that the two categorical variables are dependent. the alternative is that they are independent. the null hypothesis is that there is a relationship between education level and smoking status. the alternative is that there is no relationship. the null hypothesis is that there is no relationship between education level and smoking status. the alternative is that nonsmokers have higher education levels than smokers. the null hypothesis is that there is no relationship between education level and smoking status. the alternative is that there is a relationship.
Answers: 3
Mathematics, 21.06.2019 16:30
Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?
Answers: 3
Mathematics, 21.06.2019 22:00
The two box p digram the two box plots show the data of the pitches thrown by two pitchers throughout the season. which statement is correct? check all that apply. pitcher 1 has a symmetric data set. pitcher 1 does not have a symmetric data set. pitcher 2 has a symmetric data set. pitcher 2 does not have a symmetric data set. pitcher 2 has the greater variation.ots represent the total number of touchdowns two quarterbacks threw in 10 seasons of play
Answers: 1
Mathematics, 21.06.2019 22:30
Which set of lengths could represent the sides of a triangle? a. 3, 7, 10 b. 4, 5, 10 c. 6, 8, 14 d. 12, 6, 7
Answers: 1
Mathematics, 21.06.2019 23:00
The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?
Answers: 1
In the united states, there has historically been a strong relationship between smoking and educatio...
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