A researcher obtains a negative value for the chi-square statistic in a chi-square goodness of fit test. What can a researcher conclude based on this result?   choices: The observed frequencies are consistently larger than the expected frequencies. The expected frequencies are consistently larger than the observed frequencies. There are large differences between the observed and expected frequencies. The researcher made a mistake because a chi-square value cannot be negative.

Q: When conducting a chi-square goodness of fit test to examine whether the null hypothesis that there…

A: To find whether the given statement is true or false.

Q: A one-sided hypothesis test is to be performed with a significance level of 0.05. Suppose that the…

A: Given: Level of significance (α) =Probability of type I error. It is also called as maximize size of…

Q: What conditions are necessary to use the chi-square goodness-of-fit test? ..--. Choose the correct…

A:

Q: In a chi-square test, the larger the difference between expected and observed frequencies, the more…

A: As the difference between the expected and the observed frequencies becomes larger, the value of the…

Q: A chi-square test of significance is being used at level a = 0.01 to determine if there is some…

A: The rejection rule using p value is such that: We reject the null hypothesis H0 if the p value is…

Q: A chi-square goodness-of-fit test using a significance level of a = 0.05 was conducted to…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: A chi-square goodness-of-fit test using a significance level of α=0.05 was conducted to investigate…

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A: Null hypothesis: Subject and location of school are independent. Alternative hypothesis: Subject and…

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A: Given Information: H0:β1=0 and β2=0 significance level is 0.1 The corresponding z critical value for…

Q: A newspaper article contains the statement that, nationwide, 36% of all graduate students have a job…

A:

Q: We have given the relative frequencies for the null hypothesis of a chi-square goodness-of-fit test…

A:

Q: The value obtained for the test statistic, z, in a one-mean z-test is given. Whether the test is two…

A: a)GivenTest is left tailed testTest statistic(z)=-1.78

Q: Please answer #4 and #5

A: Given :  For sample 1  x̄1 = 3.2 s1 = 1.1 n1 = 55 For Sample 2 x̄2 =…

Q: A two-tailed hypothesis test is being used to evaluate a treatment effect with a- 05. If the sample…

A: We have to find correct decision for question.

Q: You run a test of independence between variable A and variable B and you find the probability your…

A: It is given that the p-value is 0.009.

Q: If all other factors are held constant, which of the following results in a decrease in the…

A: The true parameter is closer to the value of the null hypothesis. If the true parameter is closer to…

Q: If all other factors are held constant, which of the following results in an increase in the…

A:

Q: How are the expected counts calculated when a chi-square goodness-of-fit test is conducted? * A) The…

A: In conducting a goodness-of-fit test, we compare observed counts to expected counts. Observed counts…

Q: We have given the relative frequencies for the null hypothesis of a chi-square goodness-of-fit test…

A: The requirements that must be satisfied to perform a goodness of fit test are as follows: All the…

Q: The number of degrees of freedom in a chi-square test refers to the number of values free to vary…

A: The number of degrees of freedom in a chi-square test refers to the number of values free to vary…

Q: A  χ2 goodness-of-fit test where all assumptions were met yielded the chi-square test statistic…

A: The p-value or likelihood value is the probability that test results will be obtained at least as…

Q: If all other factors are held constant, which of the following results in a decrease in the…

A: Power = 1 - P(Type II error) the true parameter is closer to the value of the null hypothesis.,…

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A: Type I error: The type I error occurs when rejecting the null hypothesis when it is true. It is…

Q: All of the following statements are true about paired-sample t tests EXCEPT ______. 1 - They can be…

A: True statements: 2 - They can be used when the population variance is unknown. 3 - They compare…

Q: The Chi square test is based on the assumption that  a. the variables are dependent b. the expected…

A: The Chi square test is based on the assumption that  the expected frequencies are not produced by…

Q: In a random sample, the weights of 24 Black Angus steers of a certain age have a standard deviation…

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Q: In this section, we introduced the pooled t-test, which provides a method for comparing two…

A: The reason that the variables cannot be used as basis for the required test statistic is the unknown…

Q: Which of the following describes a scenario in which a chi-square goodness-of-fit test would be an…

A: The chi-square goodness of fit test is appropriate if and only if the following conditions are…

Q: A simple random sample of 1,000 United States adults was collected to investigate whether gender and…

A: The answer is a) All necessary conditions are satisfied to apply chi-square test for independence of…

Q: A teacher giving a true/false test wants to make sure her students do better than they would if they…

A: It is given that the level of significance is 0.10.

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A: H0: mean = 5.75 Ha: mean > 5.75

Q: If a chi-square goodness of fit test ends in a non-significant result it means that the expected…

A: It is an important part of statistics. It is widely used.

Q: A survey of 2,850 Canadian Internet users revealed that 1,400 of them had posted a photo or video…

A: We have given that two statements first one related to frequency distribution and the other one is…

Q: A hypothesis test is to be performed for a population proportion. For the given sample data and null…

A: The random variable X follows normal distribution. We have to test whether the majority of the…

Q: A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05.  If the…

A:

Q: The null hypothesis for the goodness-of-fit test is that the number of crimes reported at this…

A: The null hypothesis for the goodness-of-fit test is that the number of crimes reported at this…

Q: A chi-square goodness-of-fit test using a significance level of α=0.05 was conducted to investigate…

A: option A and C are correct

Q: A researcher is investigating the claim that the proportion of television viewers who identify one…

A: Solution: From the given information, the P-value is 0.03 and the level of significance is 0.05.

Q: A chi-square goodness-of-fit test where all assumptions were met yielded the test statistic…

A: The chi-square goodness-of-fit test where all assumptions were met yielded the test statistic…

Q: A researcher is testing a hypothesis of a single mean. The critical z value for α = .05 in a…

A: Given  Zcrititcal=1.96 and Zstat=-1.85

Q: A 2011 survey, by the Bureau of Labor Statistics, reporte that 91% of Americans have paid leave. In…

A: Type I Error : Type I Error occurs if we reject true null hypothesis.   Type II Error : Type II…

Q: Which of the following statement is FALSE about the Chi-square test?   a. Chi-square test assumes…

A: Chi square test is a type of non parametric hypothesis testing method. Which is used in the…

Q: If all other factors are held constant, which of the following results in a decrease in the…

A:

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Q: Suppose your null hypothesis is that engineering majors earn more than $80,000. Further, researchers…

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Q: In the chi square test, the expected frequencies: A. refer to those frequencies actually observed…

A: The formula to find the expected frequency is n*p.