Mathematics, 06.05.2020 06:37 carlinryan
How Much Alcohol Do College Students Drink? According to the website www..gov, "About 25 percent of college students report academic consequences of their drinking including missing class, falling behind, doing poorly on exams or papers, and receiving lower grades overall." A statistics student is curious about drinking habits of students at his college. He wants to estimate the mean number of alcoholic drinks consumed each week by students at his college. He plans to use a 90% confidence interval. He surveys a random sample of 71 students. The sample mean is 3.93 alcoholic drinks per week. The sample standard deviation is 3.78 drinks. Here is an applet you can use when directed to find the critical T-value. Note: the "Central Probability" is the area of the middle shaded region. T-distribution Inverse Calculator Flag this Question Question 11.25 pts Have the conditions for constructing a confidence interval been met? Group of answer choices No, there is no reason to believe that the number of alcoholic drinks consumed by students in the population is normally distributed. Yes, the sample size is large enough. No, the population standard deviation is unknown. Flag this Question Question 21.25 pts Find the critical T-value for this 90% confidence interval. Hint: Use the applet to find the T-value for 90% confidence with df = 71 – 1 = 70.
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Mathematics, 21.06.2019 15:00
When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?
Answers: 1
Mathematics, 21.06.2019 19:30
Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36
Answers: 1
Mathematics, 21.06.2019 20:50
The first side of a triangle measures 5 in less than the second side, the third side is 3 in more than the first side, and the perimeter is 17 in. how long is the third side? if s represents the length of the second side, which of the following represents the length of the third side? s-5 ws-2 s+ 3 next question ask for turn it in
Answers: 1
How Much Alcohol Do College Students Drink? According to the website www..gov, "About 25 percent of...
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