subject
Mathematics, 05.05.2020 05:37 cpratt2558

Steve wants to know what the average ACT scores of students graduated from his high school is. He randomly selected 25 students from an email list and asked them to provide the information. Of them 20 students replied and the summary of the ACT score is as below: Sample size Mean STD Min Max 20 21.5 5.7 15 26 (1) What is the sample of the study and what is the population of the study? (2) Steve is told that the population standard deviation for ACT score is 4.6 for his high school, estimate the population average ACT score of his high school graduates with 86% confidence level. (3) If the population standard deviation is not provided, estimate the population average ACT score of his high school graduates with 95% confidence level.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 16:10
The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.
Answers: 1
question
Mathematics, 21.06.2019 18:40
A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days
Answers: 1
question
Mathematics, 21.06.2019 20:30
Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?
Answers: 1
question
Mathematics, 21.06.2019 22:30
(a.s."similarity in right triangles"solve for xa.) 10b.) 20c.) 14.5d.) [tex] 6\sqrt{3} [/tex]
Answers: 1
You know the right answer?
Steve wants to know what the average ACT scores of students graduated from his high school is. He ra...
Questions
question
History, 30.03.2020 17:58
Questions on the website: 13722365