UNIT 4: INFERENCE Apply and extend previous understandings of
... MCC7.SP.1: Understand that statistics can be used to gain information about a population by examining a sample of the population; generalizations about a population from a sample are valid only if the sample is representative of that population. Understand that random sampling tends to produce repre ...
... MCC7.SP.1: Understand that statistics can be used to gain information about a population by examining a sample of the population; generalizations about a population from a sample are valid only if the sample is representative of that population. Understand that random sampling tends to produce repre ...
Confidence Interval and Hypothesis Testing with unknown
... 2) conducting hypothesis test with the two-sided alternative hypothesis and the significance level α = 0.05 are very similar. In other words, the null hypothesis H0 : µ = µ0 will be rejected at the level α = 0.05 if the 95% CI does not contain µ0 . Note: Two sided level α hypothesis test ⇒ 100(1 − α ...
... 2) conducting hypothesis test with the two-sided alternative hypothesis and the significance level α = 0.05 are very similar. In other words, the null hypothesis H0 : µ = µ0 will be rejected at the level α = 0.05 if the 95% CI does not contain µ0 . Note: Two sided level α hypothesis test ⇒ 100(1 − α ...
Worksheet_ch10 pdf - Germantown School District
... A recent article in Chance Magazine (L. Evans, 2006) states that, “For every age, all the way through the mid-90s, male [driving] fatalities are typically 3 to 5 times that of female fatalities.” In other words, at least 75% of driving fatalities are male. The data for the article (www.scienceservin ...
... A recent article in Chance Magazine (L. Evans, 2006) states that, “For every age, all the way through the mid-90s, male [driving] fatalities are typically 3 to 5 times that of female fatalities.” In other words, at least 75% of driving fatalities are male. The data for the article (www.scienceservin ...
Section 3
... – A hypothesis test of means, with σ unknown, has the same general structure as a hypothesis test of means with σ known – Any one of our three methods can be used, with the following two changes to all the calculations • Use the sample standard deviation s in place of the population standard deviati ...
... – A hypothesis test of means, with σ unknown, has the same general structure as a hypothesis test of means with σ known – Any one of our three methods can be used, with the following two changes to all the calculations • Use the sample standard deviation s in place of the population standard deviati ...
Research Methods 1
... 1. Representative samples are better than biased samples. 2. The less variation in the data, the more reliable (if variability is high in a distribution, the mean becomes less meaningful) 3. More cases are better than fewer cases. (ask 2 friends how they like the class vs. asking 25) ...
... 1. Representative samples are better than biased samples. 2. The less variation in the data, the more reliable (if variability is high in a distribution, the mean becomes less meaningful) 3. More cases are better than fewer cases. (ask 2 friends how they like the class vs. asking 25) ...
Sampling and estimation 2
... • There is an asymmetry between H0 and H1: In fact, if the data is inconclusive, we end up not rejecting H0. • If H0 is true the probability to reject H0 is (say) 5%. That DOES NOT MEAN we are 95% certain that H0 is true! • How much evidence we have for choosing H1 over H0 depends entirely on how mu ...
... • There is an asymmetry between H0 and H1: In fact, if the data is inconclusive, we end up not rejecting H0. • If H0 is true the probability to reject H0 is (say) 5%. That DOES NOT MEAN we are 95% certain that H0 is true! • How much evidence we have for choosing H1 over H0 depends entirely on how mu ...
Statistics Exam Reminders File
... Are you drawing numbers with or without replacement? Be sure to mention this in your description of the simulation and to perform the simulation accordingly. If you're not sure how to approach a probability problem on the AP Exam, see if you can design a simulation to get an approximate answer. In ...
... Are you drawing numbers with or without replacement? Be sure to mention this in your description of the simulation and to perform the simulation accordingly. If you're not sure how to approach a probability problem on the AP Exam, see if you can design a simulation to get an approximate answer. In ...
Reading Guide 8
... 1. When is it appropriate to use a t-distribution as the model for the distribution of sample means? 2. Describe the similarities between a standard normal distribution and a t distribution How do you calculate the degrees of freedom for a t distribution? 3. Describe the differences between a standa ...
... 1. When is it appropriate to use a t-distribution as the model for the distribution of sample means? 2. Describe the similarities between a standard normal distribution and a t distribution How do you calculate the degrees of freedom for a t distribution? 3. Describe the differences between a standa ...