subject
Mathematics, 01.02.2021 23:30 bloodry

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 26 first-time convicted burglars in a recent year was picked. The mean length of time in jail from the survey was 3 years with a standard deviation of 1.8 years. Suppose that it is somehow known that the population standard deviation is 1.5. If you were conducting a hypothesis test to determine if the mean length of jail time has increased, what would the null and alternative hypotheses be

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 20.06.2019 18:04
Given: quadrilateral talk is a parallelogram. prove: ta congruent lk and al congruent kt
Answers: 3
question
Mathematics, 21.06.2019 21:30
Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?
Answers: 1
question
Mathematics, 21.06.2019 22:10
Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft
Answers: 1
question
Mathematics, 22.06.2019 01:10
|z| > (1/2) {-1/2, 1/2} {z|(-1/2) < z < (1/2)} {z|z < (-1/2) ∪ z > (1/2)}
Answers: 3
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, 02.10.2019 23:00
question
Mathematics, 02.10.2019 23:00