Mathematics, 04.08.2019 01:30 groweisa
Adoctor orders 20 grams of a 52% solution of a certain medicine. the pharmacist has only bottles of 40% solution and bottles of 70% solution. how much of each must he use to obtain the 20 grams of the 52% solution?
Answers: 2
Mathematics, 21.06.2019 18:40
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
Mathematics, 21.06.2019 23:20
This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3
Answers: 1
Mathematics, 22.06.2019 00:30
Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.
Answers: 1
Mathematics, 22.06.2019 02:20
Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?
Answers: 3
Adoctor orders 20 grams of a 52% solution of a certain medicine. the pharmacist has only bottles of...
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