Chi-Square Test Questions: Expert Solutions

Recent questions in Chi-square tests
Owen Mathis 2022-11-20

Why is sample size important when analyzing data?

vidamuhae 2022-11-16

When performing a log-likelihood ratio test, do I take log to both of the likelihood first or find the ratio first and take the log?

Bayobusalue 2022-11-13

In question I do not get any sigma, I know I can do the t student test based on degrees on freedom if I do not have the population st.dev, but in my case I do not even have the sample st.dev, can it be solved or the teacher made a mistake in the text ?"The maturation time of maize plants follows the normal distribution. We follow 30 plants and it is seen that they reach maturity in 4 months. Construct a 95% confidence interval for the maturation time of the maize plant population."In order to find the margin of error i still need S (the sample st.dev) no ?Otherwise how can i proceed ? Chi squared ?

inurbandojoa 2022-11-09

A restaurant offers 7 different dishes and predicts the dishes will be ordered in the following proportions: 1 (25%), 2 (20%), 3 (10%), 4 (15%), 5 (5%), 6 (6%), 7 (15%).I am then given the actual proportions in which the dishes are ordered and asked to conduct the appropriate hypothesis test to determine whether the owners' belief regarding the order proportions is correct, then find the p-value (or bounds for the p-value) associated with this test statistic. If I do need to put bounds on the p-value, I'm unsure of how I would go about doing that.

Joglxym 2022-11-04

What is the shape of a chi-squared distribution?

varsa1m 2022-10-30

What is a chi-squared distribution?

Brianna Schmidt 2022-10-30

this ${\chi }_{1}^{2}=1.41$ is associated with a one-sided P-value between 0.10 and 0.15How can i calculate the P-value and why is it one-sided?Is that for ${\chi }^{2}$ is a one-tail test?

Stephany Wilkins 2022-10-29

For how many degrees of freedom is the test statistic proved of significance?With which realization probability is this or an even greater effect to be expected when the null hypothesis is valid?

theprettyshopper7 2022-06-21

If I have the following Hypothese:H1: Women tend to watch romantic films more than men Apparently it's a chi-square because I'm measuring relationships between expected frequency and Observed frequency and also because Gender is on the nominal level. But what if this is designed for a survey in which questions are on the nominal, Ordinal and interval level (Likert scale - differential sementic) will the outcome still be a Chi-square?

albusgks 2022-04-24

In which of the following situations should the chi-square Test for Homogeneity be used?Select the correct answer below:A professor wants to determine if the students in each of her two sections had the same distribution of grades. She records the grade distribution for each section and compares the two distributions.A survey company puts out a survey asking people two questions. First, it asks if a person owns a car or not. Second, it asks whether or not the person supports an upcoming environmental protection bill. The data are recorded in a contingency table. The company wants to determine if support for the bill is independent of car ownership.A professor expects that the grades on a recent exam are normally distributed with a mean of 80 and a standard deviation of 10. She records the actual distribution of grades and wants to compare it to the normal distribution.

tefoldaavv 2022-04-24

In the following table, likely voters’ preferences of two candidates are cross-classified by gender.For the chi-square test of independence, the value of the test statistic is:a. 2.34b. 1.62c. 3.25d. 4

micelije1mw 2022-04-24

In a chi-square test for goodness of fit, which of the following is used to compute the degrees of freedom?a. The number of cells in the tableb. The number of categories for the variable plus 1c. The number of rows times the number of columnsd. The number of categories for the variable minus 1

zamenjenot7k 2022-04-24

If the chi-square test is ${\chi }^{2}$(4, N=71)=10, if the alpha is .05, then we ...

Libby Boone 2022-04-23

Physical therapy (PT) may be just as successful as traditional surgery when treating a specific type of knee ligament tear in elderly patients. A group of researchers at a large teaching hospital conduct a trial in which patients are randomly assigned to one of three treatments. A "success" means that the subject had regained full range of motion in their knee 6 months post- treatment.When analyzing their data, which test would be appropriate for these researchers to use?Chi-square test of/for $\square$

Kymani Shepherd 2022-04-23