In an analysis investigation the usefulness of pennies, the cents portions of 100 randomly selected credit card charges are recorded. The sample.

Slides:

Advertisements

Similar presentations

What Are My Coin Riddles. I am 1 coin and I equal 1 cent. What am I? Think about it and click to see the answer.

Advertisements

Do Now 1) What does APR stand for? 2) What is the cost of credit?

AP Statistics: Section 12.1 B

Significance Testing.  A statistical method that uses sample data to evaluate a hypothesis about a population  1. State a hypothesis  2. Use the hypothesis.

Testing a Claim about a Proportion Assumptions 1.The sample was a simple random sample 2.The conditions for a binomial distribution are satisfied 3.Both.

Longwood University 201 High Street Farmville, VA 23901

(a) (b) (c) (d). What is (1,2,3)  (3,4,2)? (a) (1, 2, 3, 4) (b) (1,2)  (3,4) (c) (1,3,4,2) (d) (3,1)  (4,2)

The use of statistics in psychology. statistics Essential Occasionally misleading.

Hypothesis Testing. What is a Hypothesis In statistics, a hypothesis is a claim or statement about a characteristic of a population. A Null Hypothesis,

Hypothesis Testing for Proportion

Lesson Confidence Intervals about a Population Standard Deviation.

Inference about Two Population Standard Deviations.

Chapter Six Normal Curves and Sampling Probability Distributions.

Unit 8 Section : z Test for a Mean  Many hypotheses are tested using the generalized statistical formula: Test value = (Observed Value)-(expected.

Unit 5 Section 5-4 – Day : The Binomial Distribution  The mean, variance, and standard deviation of a variable that has the binomial distribution.

Unit 7 Section : Confidence Intervals for the Mean (σ is unknown)  When the population standard deviation is unknown and our sample is less than.

Slide Slide 1 Section 8-6 Testing a Claim About a Standard Deviation or Variance.

Chapter 9: Hypothesis Testing Section 3: The P-Value in Hypothesis Testing.

Credit cards 101. Shop around If you decide you are going to have a credit card. Each credit card company charges fees for different services. Ask questions?

Hypothesis Testing for Standard Deviation or Variance.

10.5 Testing Claims about the Population Standard Deviation.

Telepathic or just pathetic?. Investigations and experiments PPDAC.

Inference for a Population Mean

Example Suppose we want to prove that the mean commute time for people in Lexington to get to work is less than 20 minutes. A random sample of 125 people.

1 Claims about two large means E.g., “South students have a higher average SAT score that Monmouth Regional Students” The two samples are independent.

Hypothesis Testing with TWO Samples. Section 8.1.

Chapter 5 Normal Probability Distributions. Chapter 5 Normal Probability Distributions Section 5-4 – Sampling Distributions and the Central Limit Theorem.

Binomial Mean & St. Dev. Binomial Mean & Standard Deviation Expectation Yearbook Page - $14.

Example Suppose that we take a random sample of eight fuel efficient cars and record the gas mileage. Calculate the following for the results: 33, 41,

§2.The hypothesis testing of one normal population.

Section 8-6 Testing a Claim about a Standard Deviation or Variance.

Hypothesis Testing for the Mean:

The Color Bowl - Sampling. First, mix the bowl – randomize the positions of the marbles in the bowl. The idea is to give, on each draw, each marble in.

Hypothesis Tests for a Population Standard Deviation.

Analysis of Variance ANOVA - method used to test the equality of three or more population means Null Hypothesis - H 0 : μ 1 = μ 2 = μ 3 = μ k Alternative.

1 Section 8.4 Testing a claim about a mean (σ known) Objective For a population with mean µ (with σ known), use a sample (with a sample mean) to test a.

Unit 8 Section : Hypothesis Testing for the Mean (σ unknown)  The hypothesis test for a mean when the population standard deviation is unknown.

Hypothesis Test Review. A consumers group is concerned with the mean cost of dining in a particular restaurant. A random sample of 40 charges (in dollars)

Topic 10: Hypothesis Testing

Unit 8 Section 7.5.

Sampling Distribution of a sample Means

One-Sample Inference for Proportions

9.1 Testing Differences in Two Means Day II (Large Samples)

Testing a Claim About Standard Deviation or Variance

Chapter 9 Hypothesis Testing

عمل الطالبة : هايدى محمد عبد المنعم حسين

EXAMS Mon. Tues. Wed. Thur. Fri. 5/7 (Odd) 5/8 (Even) 5/9 (Odd)

From Simulations to the Central Limit Theorem

الأستاذ المساعد بقسم المناهج وطرق التدريس

Sampling Distribution

Sampling Distribution

Mixed Examples of Hypothesis Testing & Confidence Intervals

From Simulations to the Central Limit Theorem

Chapter 9 Hypothesis Testing

Testing and Estimating a Single Variance or Standard Deviation

C.2.10 Sample Questions.

MGSE7.SP.3/MGSE7.SP.4: I can use measure of center and measures of variability for numerical data from random samples to draw informal comparative inferences.

Maintenance Sheet Due Wednesday

C.2.8 Sample Questions.

Hypothesis Testing for Proportions

Maintenance Sheet Due Wednesday

Homework Due Friday- Maintenance Sheet 22

Homework Due Friday- Study Island-Maintenance Sheet 25

C.2.8 Sample Questions.

Testing a Claim About a Standard Deviation or Variance

I have… I have… Who has 3:40? Who has 12:20? I have… I have…

Maintenance Sheet Due Wednesday

Representative sampling By Majed Muati. Sampling Methods Representative Samples. Random Sampling. Systematic Sampling.

Use invNorm (2nd VARS 3) functions: Use invT (2nd VARS 4) functions:

Presentation transcript:

In an analysis investigation the usefulness of pennies, the cents portions of 100 randomly selected credit card charges are recorded. The sample has a mean of 47.6 cents and a standard deviation of 33.5 cents. If the amounts from 0 cents to 99 cents are all equally likely, the mean is expected to 49.5 cents. Use a 0.01 significance level to test the claim that the sample is from a population with a mean equal to 49.5 cents. What does the result suggest about the cents portions of credit charge charges?

Homework!! 8-5: odd