You are conducting a test of homogeneity for the claim that two different populations have the same proportions of the following two characteristics. Here is the sample data. Category A B A Population Population #1 #2 B 27 35 The expected observations for this table would be Category Population #2 56 74 Population #1 What is the chi-square test-statistic for this data? x² = Report all answers accurate to three decimal places.

Q: The test statistic is enter your response here.

A:

Q: One sample of scores has a mean of M = 45 and a sample size of n = 10 scores.  A second sample of…

A:

Q: Frito-Lay produces a 10 ounce family size bag of the regular potato chips and a 9.5 ounce family…

A: The parameter of interest is the the difference of mean weight of regular potato chips and wavy…

Q: What is the need of coefficient of dispersion in data analysis? If 25% of the items are less than 10…

A: We have to tell about :  coefficient of dispersion in data analysis. Coefficient of quartile…

Q: find the test value used to test the claim that the proportion of jellyfish stings at jones beach is…

A: Given, Sample size = 696 Sample proportion = 0.30   The null and alternative hypothesis is:

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: You sample 200 men, and 70% own cats.You sample 160 women, and 15% own cats.Find the test statistic,…

A: Obtain the value of the test statistic. The value of the test statistic is obtained below: From the…

Q: Explain why the mean and the median are useful sample statistics (i.e. what does it tell us about…

A: We have to tell why mean and median are useful sample statistics and when should we use a Mean…

Q: additionally how would you find the: test statistic & p-value

A: The claim is that mean lead concentration is less than 19 μg/g Null hypothesis: H0 : µ=9 μg/g…

Q: What is the formula to find weighted mean.

A: Weighted Mean: A mean in which some values are more important than others.

Q: Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the…

A: a) Mean = 1.24 median = 0.57 There is heavy positive skewness in the data.

Q: Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke…

A: It is given that both sample sizes are 200, number of strokes for aspirin alone is 60 and number of…

Q: Looking at the mean score for the Goodyear Silents (6) and their opponents (3.54)   would you expect…

A: Given Information: Mean score of good year silents = 6 Mean score of their opponents = 3.54

Q: The mean score for one of the classes was found to be 76.5. Which class do you think is more likely…

A: If the distribution is symmetric then mean=median=mode.

Q: Explain Testing a Single Mean for significance?

A: Z-test for significance of a single mean: The z-test is appropriate when population standard…

Q: What are the limitations of the mean

A: A.M is a ratio of sum of observations to the number of observations.

Q: Tina's science fair project was to estimate the mean amount of chemicals in her city's water supply.…

A: Solution:  Relationship between the sample size and the confidence interval:   If the sample size or…

Q: Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the…

A: Given n=15

Q: Explain the term "deviation scores"?

A:

Q: Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke…

A: Given ,  Aspirin alone :  Sample size = n1 = 200  Number of strokes = x1= 60 Sample proportion = p^1…

Q: Which one of the following is the correct way to report the results of a t test? The mean math-test…

A: Given Information:  The mean math-test score for the 12th grade students (M = 82.7, SD = 4.9)   The…

Q: r-.393, n 48, p <.05, two-tails Interpret this finding in a short sentence as you would find it in a…

A: Given  r=0.393 n=48 p&lt;0.05 two tails

Q: Yessica thought that there was a correlation between the amount of time students slept the evening…

A: From the given information assume that x defines the sleep time the evening before the final exam…

Q: Answer the questions below. (a) In a survey, a soft drink company asks people to…

A: a) measure gives the most frequently mentioned is the mode b)The data given is: 40, 42, 43, 44, 45,…

Q: How might an extreme value in the sample data set affect the value of the median? (A) An extreme…

A: From the given information,

Q: What's the Z score and how is it calculated?

A: We know z-score is used in many fields. But we should know what is the meaning of z-score and how to…

Q: what is a z-score of 80%?

A: 80% z score:  alpha=1-0.80           =0.2 alpha/2=0.2/2               =0.1  From standard normal…

Q: What are 2 situations when you will use median as a measure of central tendency.

A: The median is the midpoint of the data array when sorted in either increasing or decreasing order.

Q: The sample data here is the cholesterol levels for 10 men diagnosed with high cholesterol. The first…

A: Result Option 3 is correct. The mean cholesterol level of males who take the medicine is lower than…

Q: Q4: Find for the following data (7, 3,5,6,2,8,4) the mean absolute deviation, variance and standard…

A:

Q: What is the standard error of the mean?

A: Standard error: Standard error is a measure which explains how accurate are the sample means to…

Q: When finding p value and critical value how do I learn how to read the table of a scores,  like how…

A: If we recall definition of p-value , it is the probability of obtaining observed or more extreme…

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2