Math 12 Elementary Statistics Marcella Laddon, Instructor
... In this section we are again estimating a population mean, only now we do not know σ . Assumptions: 1) the sample is a simple random sample and 2) either the population is normally distributed and/or n > 30. We must use the t distribution – either on your calculator, or from table A-3. Notice in cal ...
... In this section we are again estimating a population mean, only now we do not know σ . Assumptions: 1) the sample is a simple random sample and 2) either the population is normally distributed and/or n > 30. We must use the t distribution – either on your calculator, or from table A-3. Notice in cal ...
Problem set 4 solutions
... II error, not rejecting the null when it is false. This is one minus the power. The probabiliy of a type II error increases when the probability of a type I error decreases. The power of the test is one minus the probability of a type II error. So, the answer to the question is FALSE. c. False. The ...
... II error, not rejecting the null when it is false. This is one minus the power. The probabiliy of a type II error increases when the probability of a type I error decreases. The power of the test is one minus the probability of a type II error. So, the answer to the question is FALSE. c. False. The ...
mean weight and parasite infection (25 nest)
... 2. A variant of Lindley’s paradox: There are two competing theories about the frequency of a certain mutation in stone louse populations. Dr. Miller states that only 0.1% of the individuals can have the allele. Dr. Smith claims that the relative frequency p of the allele in a population can be any v ...
... 2. A variant of Lindley’s paradox: There are two competing theories about the frequency of a certain mutation in stone louse populations. Dr. Miller states that only 0.1% of the individuals can have the allele. Dr. Smith claims that the relative frequency p of the allele in a population can be any v ...
To Do Now After 6
... 1. Julia enjoys jogging. She has been jogging over a period of several years, during which time her physical condition remained constantly good. Usually, she jogs 2 miles per day. During the past year Julia has sometimes recorded her time to run 2 miles. She has a sample of 90 of these times. For th ...
... 1. Julia enjoys jogging. She has been jogging over a period of several years, during which time her physical condition remained constantly good. Usually, she jogs 2 miles per day. During the past year Julia has sometimes recorded her time to run 2 miles. She has a sample of 90 of these times. For th ...
252conf
... the founders of modern statistics. This distribution has two parameters: DF1 and DF2, , the degrees of freedom of the first and second samples. A rough sketch is shown here. It shows three different F distributions with their upper 5% critical points. Generally speaking a value of F above the critic ...
... the founders of modern statistics. This distribution has two parameters: DF1 and DF2, , the degrees of freedom of the first and second samples. A rough sketch is shown here. It shows three different F distributions with their upper 5% critical points. Generally speaking a value of F above the critic ...
Introduction to Biostatistics
... population mean is contained within the specified interval. (This is not the statistically correct interpretation, but it relatively easy to understand as such, and this interpretation is commonly used.) Probabilistic interpretation: in repeated random sample of the population, 95% of all such int ...
... population mean is contained within the specified interval. (This is not the statistically correct interpretation, but it relatively easy to understand as such, and this interpretation is commonly used.) Probabilistic interpretation: in repeated random sample of the population, 95% of all such int ...
Lecture 3
... What If There Are More Than Two Factor Levels? • The t-test does not directly apply • There are lots of practical situations where there are either more than two levels of interest, or there are several factors of simultaneous interest • The analysis of variance (ANOVA) is the appropriate analysis “ ...
... What If There Are More Than Two Factor Levels? • The t-test does not directly apply • There are lots of practical situations where there are either more than two levels of interest, or there are several factors of simultaneous interest • The analysis of variance (ANOVA) is the appropriate analysis “ ...
