In the following five scenarios, H0, α, the obtained probability (p-value), and the true status of H0 are given. Assume that our test statistic follows a standard normal distribution. Do the following: (a) State whether ...
|
If we believe the percent to be 75%, how many police officers must we survey to estimate the proportion of officers who graduated from a police academy if we want to ensure we can be 99% we are within 2% of the true prop ...
|
A certain device is used to determine the sex of an unborn baby, but the device is not very reliable. If the fetus is truly a boy, the device says BOY with probability 0:8 (but, mistakenly, GIRL with probability 0:2). If ...
|
For a population of individuals that has a standard deviation of 10, what is the standard error of the mean for samples of size (a) 2, (b) 3, (c) 4, (d) 5, (e) 10, (f) 20, (g) 100?
|
Suppose a sports team did a study that showed that the demand curve for tickets was perfectly inelastic at the capacity of building up to a price of $350 per ticket, at which point it becomes perfectly elastic. 1) Draw a ...
|
A researcher is interested in the relationship between leisure time physical activity, diet, extracurricular activities and hours of sleep with cardiovascular fitness in children ages 6 through 12. She will recruit 100 c ...
|
Using one-sample hypothesis testing. In a high school, Mark's class took the admission test for business school and averaged 83.4. For all the 10 classes taking the same test, their scores are (including Mark's): 78.2, 9 ...
|
Matt sells watermelons on the side of the road. The weight of a watermelon has a normal distribution with mean = 9.5 lbs and the standard deviation = 4 lbs. If he loads 100 watermelons on to his truck, what is the probab ...
|
Practical Exercise 1: Assume the demand for teachers (Ld) in a school is given by the following equation: W = 1700 - 2L D and the supply of teachers (L S ) depends on whether the school is a public school or private sch ...
|
John plans to take three suits on his business trip. If John owns 8 suits, how many ways can the 3 suits be selected?
|
|