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Since
p- value is less than 0.05 ,we have enough evidence to conclude
that for headache there is a dependency between gender
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3. Chi-Square Test Advil 120 300 420 CVS lbuprofen 480 200 680 Total 600 500 1100...
1. A hypothesis test is an example of: a.Descriptive statistics b.Inferential statistics c.A measurement of spread...
1. A hypothesis test is an example of: a.Descriptive statistics b.Inferential statistics c.A measurement of spread d.Data mining 2. If an analyst collects data to determine if the mortality rate at her facility is different from the state average ps, what are the appropriate null and alternative hypotheses? a. HO:p=ps vs HA: pps b. HO:pps vs HA: p=ps c. HO:p=ps vs HA: p>ps d. HO:p≥ps vs HA: p<ps 3. In hypothesis testing, a type I error is: a. The probability...
CCSF Introductory Statistics Econ. 5 Chapter 10 Practice Assignment Name: Harry's Hamburgers claims that the residents...
CCSF Introductory Statistics Econ. 5 Chapter 10 Practice Assignment Name: Harry's Hamburgers claims that the residents of Harryville eat at the hamburger chain an average of exacty 18 6mes per year. You took a sample of 48 residents of Harryvile and found that the sample mean was 17. The sample standard deviation was 4.5. You want to test to see if Harry's claim can be dasputed with a significance level o o.05 1. For each number in with that number...
Q2. Hypothesis Testing with a Z test (14 points total) A research institute examined the number...
Q2. Hypothesis Testing with a Z test (14 points total) A research institute examined the number of smart phones and tablets connected to the internet in American households and reported a mean (μ) of 5 devices per household and a standard deviation (σ) of 1.5 devices. But I wonder if the statistics in my neighborhood, Chandler, would be different from the national average. To test this idea, I randomly picked 16 friends of mine living in Chandler and asked them...
stats Q2. Hypothesis Testing with a Z test (14 points total) A research institute examined the...
stats Q2. Hypothesis Testing with a Z test (14 points total) A research institute examined the number of smart phones and tablets connected to the internet in American households and reported a mean (μ) of 5 devices per household and a standard deviation (σ) of 1.5 devices. But I wonder if the statistics in my neighborhood, Chandler, would be different from the national average. To test this idea, I randomly picked 16 friends of mine living in Chandler and asked...
Statistic questions
Short Answer 9. Suppose that you and a friend analyze the same sample data and conduct a test of significance about the same conjectured value, but you use a two-sided alternative and your friend uses a onesided alternative. a. Will you and your friend obtain different values of the test statistic? Explain briefly. b. Will you and your friend obtain different values of the p-value? Explain briefly. 10. The National Institutes of Health funded a study of a random sample of 856 people age...
CCSF Introductory Statistics Econ. 5 Chapter 10 Practice Assignment Name: Harry's Hamburgers claims that the residents of Harryville eat at the hamburger chain an average of exacty 18 6mes per year. You took a sample of 48 residents of Harryvile and found that the sample mean was 17. The sample standard deviation was 4.5. You want to test to see if Harry's claim can be dasputed with a significance level o o.05 1. For each number in with that number...
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