subject
Mathematics, 10.11.2019 22:31 lovebug7685

From generation to generation, the mean age when smokers first start to smoke varies. however, the standard deviation of that age remains constant at around 2.1 years. a survey of 39 smokers of this generation was done to see if the mean starting age is at least 19. the sample mean was 18.2 with a sample standard deviation of 1.3. do the data support the claim at the 5% level?

ansver
Answers: 1

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 16:30
What are “like terms”? why can we only add like terms?
Answers: 1
question
Mathematics, 21.06.2019 22:10
Which expression and diagram represent “renee biked four times as far this month as last month”?
Answers: 1
question
Mathematics, 21.06.2019 22:10
What is the factor form of x^2-9x+14
Answers: 2
You know the right answer?
From generation to generation, the mean age when smokers first start to smoke varies. however, the s...
Questions
question
Biology, 16.04.2020 17:54
question
Biology, 16.04.2020 17:54
Questions on the website: 13722366