subject
Mathematics, 03.08.2019 03:20 ehazlitt

Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. a study was then done to see if the mean time has increased in the new century. a random sample of 27 first-time convicted burglars in a recent year was picked. the mean length of time in jail from the survey was four years with a standard deviation of 1.9 years. suppose that it is somehow known that the population standard deviation is 1.4. conduct a hypothesis test to determine if the mean length of jail time has increased. assume the distribution of the jail times is approximately normal. calculate the following. (enter exact numbers as integers, fractions, or decimals.) (a) x (b) σ (c) sx (d) n

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 19:00
Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.
Answers: 2
question
Mathematics, 21.06.2019 20:00
Anature center offer 2 guided walks. the morning walk is 2/3 miles. the evening walk is 3/6 mile. which is shorter
Answers: 1
question
Mathematics, 21.06.2019 20:00
Find the value of x. give reasons to justify your solutions! l, m ∈ kn
Answers: 3
question
Mathematics, 21.06.2019 21:30
Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?
Answers: 2
You know the right answer?
Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burg...
Questions
question
Mathematics, 20.08.2019 18:00
question
Mathematics, 20.08.2019 18:00
question
French, 20.08.2019 18:00
Questions on the website: 13722366