8. Suppose a sample of 300 participants is classified into one of 4 categories or 'items'. If the results are analyzed with a one-way Chi-square test, what degrees of freedom (df) value should be used? A. 5 B. 4 C. 2 D. 3 9. Suppose a researcher used a sample of 200 participants to determine if there is a significant preference between 4 flavors of yogurt. Each individual tastes all 4 flavors and then selects his/her favorite. If the data are evaluated with a one-way Chi-square test using the .05 level of significance, how large does the calculated value need to be to reject the null hypothesis (remember to round off all decimals to 2 places)? A. Equal to or greater than 5.99 B. Less than 5.99 C. Equal to or greater than 7.82 D. Equal to or greater than 3.84

Q: For Bonferroni, how would you report your results? A Bonferroni post hoc test (p < .05) revealed…

A: It can be observed from Bonferroni outcome that the p-value for the difference between group-2 and 1…

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A: From the given information, 8.0% of the California residents are insufficient rest. 8.8% of the…

Q: Suppose the dietician conducted his study and found a p-value of 0.085.  Based on this p-value, what…

A: Given :  p -value = 0.085

Q: A researcher (not coincidentally a psychologist) hypothesizes that Psychology majors have greater…

A: Given:For Psyc majors:n1=101, M1=43 and s1=6 For Business majors:n2=101, M2=38 and s2=4.5…

Q: ou want to find out if the proportion of female college students who had a scholarship during the…

A:

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: We have given that,  Sample size n1 = 401. Sample size n2 = 447.pp Favarable case X1 = 156.…

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A: a) 95% confidence interval was calculated to be (-12.05, -9.95): There is 95% confident that the…

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A:

Q: Q3 Below is a table showing the number of people in three different groups experience abdominal pain…

A: The chi-square test is used to estimate whether there is any significant difference between the two…

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A: (a) The test is that the proportion p1 of all depressed individuals taking Resithan who find relief…

Q: A company that produces cranberries knows that about 7% of its cranberries are bruised in the…

A: It is given that the p-value is 0.004.

Q: A researcher is interested in determining if the proportion of children that collect specific type…

A: The null and alternative hypothesis is; H0: The proportion of children that collect a specific type…

Q: According to the general opinion, with gender There is a relationship between the amount of…

A: To determine whether smoking is independent of gender or not, the test of independence needs to be…

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A:

Q: In a survey of airline travelers, subjects were observed in the coach section of airplanes to…

A: Given      Bothered Not Bothered Female 19%  25%  Male 38%  18%

Q: A sample of n=24 is selected from a population = 120 and σ = 40.  If the sample mean is 130, what is…

A: It is given that the population mean, μ=120 and standard deviation, σ=40. For the sample size of 24,…

Q: The times of India conducted two surveys –one in Bangaloreand other in Chennai. In Bangalorea random…

A: From the provided information,

Q: One sample with n=4 scores has a mean of 12, and a second sample with n=6 scores has a mean of 8.…

A: Given information Sample 1 n1 = 4, µ1= 12 Sample 2 n2 = 6, µ2= 8

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Q: Earlier in the chapter, we introduced the chi-square test of independence with a study examining the…

A: State the hypotheses. Null hypothesis: Alternative hypothesis:

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A: Given: weight at the beginning of the semester (X) End of term weight (Y) 45 52 61 65 62 64…

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A:

Q: The F test describes the ratio of two sources of variability: that for subjects treated differently…

A: The F test describes the ratio of two sources of variability: that for subjects treated differently…

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A: Here use benefits of ANOVA against multiple t test

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A:

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Q: It was estimated that 20% of adult Americans suffer from some degree of hearing loss. A researcher…

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Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of…

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Q: A newspaper article about the results of a poll states: "In theory, the results of such a poll, in…

A: Margin of error = 0.05 Sample proportion = 0.99 z critical value at 0.05 is 1.96

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Q: Suppose that an anxiety measure has a mean of 106 and SD of 20. The researcher only wants to work…

A:

Q: Q5. To compare the customer satisfaction levels of two competing companies, 174 customers of company…

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Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: The provided information are:

Q: A random sample of n = 9 scores is obtained from a population with µ = 50 and σ = 9. If the sample…

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Q: . Suppose that the inside diameter of bulb lamp manufactured by a company are normally distributed…

A: Denote the random variable of interest here, the inside diameter of a randomly selected bulb lamp,…

Q: What proportion of the distribution of sample means is between a z  of 1.34 and z of -1.00?

A: P(1.34&lt;z&lt;-1.00)=?

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A: Given, The hypothesis to be tested here is- This is right tailed test. Degree of freedom is…

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A: The difference between initial weight and the final weight is determined for each subjects.

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A: Given regression equation

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Q: A personal trainer wanted to test the effectiveness of two different workout routines. She took a…

A: Obtain the 85% confidence interval for the average difference in the effectiveness of the two…

Q: Is there evidence of a difference between males and females in the proportion who said they prefer…

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.