Lesson 8.1 Estimation µ when σ is Known Notes
... zc = critical value for confidence level c based on the standard normal distribution. Example 3: Julia enjoys jogging. She has been jogging over a period of several years during which time her physical condition has remained constantly good. Usually, she jogs 2 miles per day. The standard deviation ...
... zc = critical value for confidence level c based on the standard normal distribution. Example 3: Julia enjoys jogging. She has been jogging over a period of several years during which time her physical condition has remained constantly good. Usually, she jogs 2 miles per day. The standard deviation ...
Reject H 0
... We can never know if the test provided the correct answer, we can only control the probability of making a certain type of error. Level of significance – the probability of making a Type I error when the null hypothesis is true as an equality. ...
... We can never know if the test provided the correct answer, we can only control the probability of making a certain type of error. Level of significance – the probability of making a Type I error when the null hypothesis is true as an equality. ...
MULTIPLE CHOICE. Choose the one alternative that best completes
... 1088 subjects is randomly selected, find the probability that the person chosen is a nonsmoker gi ven that it is a woman. Round to the nearest thousandth. A) 0.388 B) 0.353 C) 0.723 D) 0.496 21) A study conducted at a certain college shows that 53% of the school's graduates find a job in their chose ...
... 1088 subjects is randomly selected, find the probability that the person chosen is a nonsmoker gi ven that it is a woman. Round to the nearest thousandth. A) 0.388 B) 0.353 C) 0.723 D) 0.496 21) A study conducted at a certain college shows that 53% of the school's graduates find a job in their chose ...
Document
... 1. Scores on a commonly used IQ test are approximately normally distributed with mean 100 and standard deviation 15. In a group of 1000 people, about how many would have IQ's above 115? a) about 5 b) about 25 c) about 50 d) about 160 e) some other number 2. Here are two stemplots. What statistics ar ...
... 1. Scores on a commonly used IQ test are approximately normally distributed with mean 100 and standard deviation 15. In a group of 1000 people, about how many would have IQ's above 115? a) about 5 b) about 25 c) about 50 d) about 160 e) some other number 2. Here are two stemplots. What statistics ar ...
normalMarch2006
... We assume here that the population may be modelled using a normal distribution with unknown mean but known variance 2 For example, suppose one wants to investigate IQ of students at StAndrews. As you cannot study the whole population, you need to measure the IQ’s of a random sample of students. I ...
... We assume here that the population may be modelled using a normal distribution with unknown mean but known variance 2 For example, suppose one wants to investigate IQ of students at StAndrews. As you cannot study the whole population, you need to measure the IQ’s of a random sample of students. I ...
MATH-1110 (DUPRÉ) SPRING 2011 TEST 3 ANSWERS FIRST
... 1-PropZTest here, you enter p0 = .4 and x = 32 and n = 100. The readout will tell you p̂ = x/n = 0.32 and the value of p in the readout is the P-Value or significance of the data which is here 0.0512352053, and you see that the answers do not agree to any significant digits although they are both ar ...
... 1-PropZTest here, you enter p0 = .4 and x = 32 and n = 100. The readout will tell you p̂ = x/n = 0.32 and the value of p in the readout is the P-Value or significance of the data which is here 0.0512352053, and you see that the answers do not agree to any significant digits although they are both ar ...