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# Hypothesis Testing

### Kannon Camera Hypothesis Testing: Set up MegaStat to perform test and interpret

Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim. In summary, in this problem you are given: x = 10.5 (This is a x with - above it) Ï? = .52 n = 16 ? = .10 In part 1 of 5, you found that the kind of problem is

### Kannon Camera Hypothesis Testing: Find the p value of the test statistic and interpret

Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim. In this problem you are given: In Part 1 of 5 you found that the kind of problem is; a hypothesis test of the population mean; with the population sigma known; requiri

### Hypothesis Testing for Kannon Camera's claims about newly developed camera

Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim. In summary, in this problem you are given: x = 10.5 (This is a x with - above it) Ï? = .52 n = 16 ? = .10 From part 1 of 5 you found that the kind of proble

### Hypothesis Testing: Population Type, Relation, Value

Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim. A sample of 16 cameras was used; they were tested and found to have a mean number of photographs per second of 10.50. Previous tests of cameras of this type revealed that

### Hypothesis Testing

Assume you are a camera buff. You and your camera club have recently learned that Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. This is very impressive, but you have learned (from painful experience) to be skeptical of technology claims. You decide to ev

### Statistics: Create a pivot table of management level versus gender

Use the cumba file attached and show work in Excel. .Using the Cumba database file, create a pivot table of management level versus gender. Then, copy the data from the table into a chi square table to see if a relationship exists between employee genders and their management level. What can you conclude at the .05 significa

### Hypothesis Testing of Mean: Baseball 2008 Data

59. Refer to the baseball 2008 data, which reports information on the 30 major league teams for the 2008 baseball season. http://highered.mcgraw-hill.com/sites/0073401781/student_view0/index.html Go to: Datasets. Unzip the file and look for the Baseball file. a. Conduct a test of hypothesis to determine whether the

### Hypothesis Testing: P Value, weight of evidence

1. Since 9/11/2001, there has been increased concern for passenger safety. This has led to calls for new and more intrusive passenger screening equipment. While concerns for passengers' privacy are an important part of the debate, there are also concerns for the length of time required to move passengers through the proposed new

### Statistics P Value for testing: Weight of evidence, null hypothesis

1. The senior management of the electric power utility company, let there be light (LTBL), has recently built, at considerable expense, a state of the art nuclear power plant in Gary, Indiana. The utility has applied for a start-up permit from the Environmental Protection Agency (EPA), which has expressed concern over the potent

### What is the p-value for the test? Over a period of years, toothpaste has received a mean rating of 5.9, on a 7-point scale, for overall customer satisfaction with the product. Because of a minor unadvertised change in the product, there is concern that the satisfaction may have changed. Suppose the satisfaction rating from a sample of 60 customers have a mean of 5.60 and a standard deviation of .87. Do these data indicate that the mean satisfaction rating is different from 5.9? Test with a = .05. What is the p-value for the test?

Over a period of years, toothpaste has received a mean rating of 5.9, on a 7-point scale, for overall customer satisfaction with the product. Because of a minor unadvertised change in the product, there is concern that the satisfaction may have changed. Suppose the satisfaction rating from a sample of 60 customers have a mean of

### Statistics: P value, probability distribution, confidence interval, testing, mean, range

PROBLEM 1: NBC TV news, in a segment on the price of gasoline, reported last evening that the mean price nationwide is \$1.50 per gallon for self-serve regular unleaded. A random sample of 35 stations in the Milwaukee, WI, area revealed that the mean price was \$1.52 per gallon and that the standard deviation was \$0.05 per gall

### Polling elections: Pollsters report margin of error; what else should they provide?

When pollsters report results of a poll, they often include the margin of error but not much more. If candidate X has 54 percent support of the voters with a margin of error of 3 percent, that means the candidate is predicted to have between 51 percent and 57 percent support in the election. Before jumping to conclusions

### Stating hypotheses

Need help formulating both numerical and verbal hypothesis statements on the subject of how social anxiety disorder affect the routine life of a person.

### Hypothesis Testing Problems: Mean & Proportion

9.23 A manufacturer of chocolate candies uses machines to package candies as they move along a filling line. Although the packages are labelled as 8 ounces, the company wants the packages to contain a mean of 8.17 ounces so that virtually none of the packages contain less than 8 ounces. A sample of 50 packages is selected period

### Golf professional claims members who have taken lessons lowered handicap

See attached file. The golf professional at a private course claims that members who have taken lessons from him lowered their handicaps by more than 5 strokes. The club manager decides to test the claim by randomly sampling 25 members who have had lessons and asks each to report their reduction in handicap. These data are st

### Explain difference between the null and alternate hypothesis: Write expressions

Explain the difference between the null hypothesis and the alternate hypothesis. How is the null hypothesis chosen (why is it null)? What is the importance of rejecting the null hypothesis in relation of the sample to the population? With a failure to reject the null hypothesis, can we make a general statement about the populati

### In New York State, savings banks are permitted to sell a form of life insurance

See attached files. In New York State, savings banks are permitted to sell a form of life insurance called savings bank life insurance (SBLI) . The approval process consist of underwriting, which includes a review of the application, a medical information bureau check, possible request for additional medical information and m

### Hypothesis Testing Problem Set

[1.5%] ONE SAMPLE HYPOTHESIS TEST FOR MEAN: A bowler who has averaged 196 pins in the past year is asked to experiment with a ball made of a new kind of material. If he rolls 25 games with the new ball, averaging 204 pins with a standard deviation of 24.9, can one conclude at a level of significance of .01 that the new ball ha

### AIU data: Perform a two-tailed hypothesis test on intrinsic and extrinsic variable's data

See attached data set. Using AIU's survey responses from the AIU data set, complete the following requirements in the form of a report: 1. Perform a two-tailed hypothesis test on both the intrinsic and the extrinsic variable's data, using a .05 significance level. 2. Begin by creating a null and an alternate statement.

### Statistical versus practical significance: example

Statistical vs. practical signficance Consider the following statement and discuss its implications. 'It is possible for a statistically significant result to be of no particular practical significance, depending on the context of the analysis.' a. Use a concrete example to illustrate your point(s). b. Explain the di

### Testing the Distribution of Seasonal Colds in Canada

It has been hypothesized that the distribution of seasonal colds in Canada is as follows: Season Percentage (%) Fall 35 Winter 25 Spring 30 Summer 10 A random sample of 200 Canadian citizens provided the following results: Season Observed Fr

### Statistics: Test whether 30% of telephone customers want high speed internet

A telephone company estimates that 30% of its customers are interested in high-speed Internet Service. To test this estimate, a random sample of 100 customers were selected and the results showed that 25 were interested in high-speed Internet Service. Can it be concluded that the percentage of customers interested in high-speed

### Statistics: Hypothesis that playing classical music during tests increses scores

A psychologist believes that if classical music is played during a test, test scores will increase. In the past, the mean test score was 60. A random sample of 49 individuals wrote the test while classical music was in the background. The sample results showed a mean test score of 62 and a standard deviation of 6.3. Using a 5% l

### Statistics: Study for number of hours spent doing household chores

A study conducted last year indicated that adults spent an average of 14 hours on household chores during the weekend. A research group wishes to determine if the average hours spent o household chores during the weekend this year is different from the 14 hours of last year. Consequently, the research group selects a random samp

### Interpretation of Subjetive Hypothesis without numeric data

Pollsters just report the results of hypothesis tests that show statistical significance but not those in which there was insufficient evidence. Therefore, I would like the pollster to provide both the good and bad results. This is because, as students of Statistics, we should remember that if there is insufficient evidence to r

### Test and analyze US family size, victims of burglary, hours of TV watching per week

1. The average U.S. family includes 3.13 persons. To determine whether families in her city tend to be smaller in size compared to those across the United States, a city council member selects a simple random sample of 25 families. She finds the average number of persons in a family to be 2.78, with a standard deviation of 0.89.

### Importance of random sample and use in hypothesis testing

Why is it important that a sample be random and representative when conducting hypothesis testing?

### The video Game Satisfaction Rating Case

The Video Game Satisfaction Rating Case Please help with the following problem. Recall that "very satisfied" customers give the XYZ-Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ- Box wishes to use the random sample of 65 satisfaction ratings to provide evidence supporting the

### Statistics 5 problems: State the hypothesis, test, interpret the decision

For each problem below, answer the following 1. State the Ho 2. State the H1 3. Find the critical value 4. Determine the test statistic. Explain 5. State the decision rule 6. Show the decision rule graphically 7. Determine the computed value of the test statistic 8. Determine the p-value 9. What is your decis