Term
| Two types of errors in Hypothesis testing. |
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Definition
Type I: if Null Hypothesis is rejected when it is true
Type II: if Null Hypothsis is accepted when it is false |
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Term
| In Criminal trial, what corresponds to the significance level of a Hypothesis test? |
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Definition
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Term
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Definition
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Term
| Symbol for a sample proportion |
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Definition
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Term
| Symbol for a Sample standard deviation |
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Definition
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Term
| Symbol for a Population mean |
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Definition
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Term
| Symbol for a population proportion |
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Definition
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Term
| Symbol for a Population standard deviation. |
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Definition
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Term
Identify the population parameter (mean, proportion, or standard deviation) being tested and the distribution
(Standard Normal or Chi-Square) that you would use to conduct the hypothesis test for a claim about a
basketball player’s shooting percentage. |
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Definition
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Term
Identify the population parameter (mean, proportion, or standard deviation) being tested and the distribution
(Standard Normal or Chi-Square) that you would use to conduct the hypothesis test for a claim about a
basketball player’s points scored per game. |
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Definition
| Proportion/standard normal |
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Term
Identify the population parameter (mean, proportion, or standard deviation) being tested and the distribution
(Standard Normal or Chi-Square) that you would use to conduct the hypothesis test for a claim about a
basketball player’s c) game to game consistency (or inconsistency) in total points scored. |
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Definition
| Standard deviation/Chi-Square |
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Term
| Two types of Statistical analysis |
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Definition
| Inferential and descriptive |
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Term
| Define ANOVA (analysis of Variance) Hypothesis test |
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Definition
| Used to compare means of three or more populations. |
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Term
| Define a two sample Z test |
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Definition
| Used to test the difference between two population means when the large sample is randomly selected each is independent. |
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Term
| Define a two sample F test |
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Definition
| used to compare two population variances. |
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Term
| Define a discreet variable. |
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Definition
| has a finite or countable number of possible outcomes that can be listed. Most often represent counted data. |
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Term
| Define a continuous variable. |
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Definition
| Has an uncountable number of possible outcomes. Most often measured data. |
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Term
| What 2 conditions must a discreet probability distribution satisfy? |
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Definition
1. The probability of each value is between 0 and 1, inclusive.
2. The sum of all probabilities equal 1. |
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Term
| Mean of a discreet random variable. |
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Definition
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Term
| Symbol for population Variance is? |
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Definition
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Term
| Symbol for standard variation is? |
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Definition
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Term
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Definition
| The mean of a random variable represents what you would expect to happen over thousands of trials...or expected value. |
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Term
| Conditions for a binomial experiment are? |
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Definition
1. experiment is repeated for a fixed # of trials, and each trial is independent.
2. There are only 2 possible outcomes: Success (S) and failure (F).
3. The probability of success P(S) is the same for each trial.
4. The random variable x counts the number of successful trials. |
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Term
| How do you find a binomial probability using T84? |
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Definition
hit: 2nd distr.
then: 0: binompdf
Enter: n,p,x |
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Term
| What does the mean of a bell shaped distribution tell you about the graph of the distribution? |
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Definition
| the mean is where the distribution is centered. |
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Term
| What does the standard deviation of a bell shaped distribution tell you about the graph of the distribution? |
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Definition
| It tells you how much the distribution is spread out from the mean. the higher the standard deviation, the more spread out the data from the mean. |
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Term
| What is the range possible for Z scores in a standard normal distribution? |
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Definition
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Term
| Suppose a variable x is known to be uniformly distributed. What does the Central Limit Theorum tell you about the distribution of x(line), for n=30? |
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Definition
| The sampling distribution of the variable x (line) will be approximately normally distributed. |
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Term
| Define level of Confidence. |
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Definition
| The prob that the interval estimate contains the pop parameter. |
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Term
| If sample size is kept constant and the confidence level is increased, what effect would it have on the margin of error of a confidence interval estimate? |
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Definition
| If sample size is kept constant, an increase in confidence level will increase margin of error. |
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Term
| Does rejecting the null hypothesis mean you are concluding the alternative hypothesis to be true? |
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Definition
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