Can someone help with these questions. I did majority of the work. but some i need help with.
Are the mean number of times a month a person eats out the same for whites, blacks, Hispanics and Asians? Suppose that Table 13.26 shows the results of a study (listed below) Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data
were collected independently and randomly. Use a level of significance of 0.05. (graph from excel is also listed below).
a. Ho
b. Ha
c. In words, CLEARLY state what your random variable X bar or P′ represents.
d. State the distribution to use for the test. ( f distribution)
e. What is the test statistic? (f statistic 0.885)
f. What is the p-value? In one or two complete sentences, explain what the p-value means for this problem. ( I know the p value is 0.471 but i don't know what it means for this problem)
g. Use the previous information to sketch a picture of this situation. CLEARLY, label and scale the horizontal axis and shade the region(s) corresponding to the p-value.
h. Indicate the correct decision ("reject" or "do not reject" the null hypothesis), the reason for it, and write an appropriate conclusion, using complete sentences
Alpha: (0.05)
Decision: _______
Reason for decision: _______
Conclusion: _______
i. Construct a 95% confidence interval for the true mean or proportion. Include a sketch of the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval.
WHITE BLACK HISPANIC ASIAN
6 4 7 8
8 1 3 3
2 5 5 5
4 2 4 1
6 6 7
princessflip
Question:
Can someone help with these questions. I did majority of the work. but some i need help with.
Are the mean number of times a month a person eats out the same for whites, blacks, Hispanics and Asians? Suppose that Table 13.26 shows the results of a study (listed below) Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data
were collected independently and randomly. Use a level of significance of 0.05. (graph from excel is also listed below).
a. Ho
b. Ha
c. In words, CLEARLY state what your random variable X bar or P′ represents.
d. State the distribution to use for the test. ( f distribution)
e. What is the test statistic? (f statistic 0.885)
f. What is the p-value? In one or two complete sentences, explain what the p-value means for this problem. ( I know the p value is 0.471 but i don't know what it means for this problem)
g. Use the previous information to sketch a picture of this situation. CLEARLY, label and scale the horizontal axis and shade the region(s) corresponding to the p-value.
h. Indicate the correct decision ("reject" or "do not reject" the null hypothesis), the reason for it, and write an appropriate conclusion, using complete sentences
Alpha: (0.05)
Decision: _______
Reason for decision: _______
Conclusion: _______
i. Construct a 95% confidence interval for the true mean or proportion. Include a sketch of the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval.
WHITE BLACK HISPANIC ASIAN
6 4 7 8
8 1 3 3
2 5 5 5
4 2 4 1
6 6
7
SUMMARY
f = 0.885297483
p value = 0.471058044
f crit = 3.287382105
ss between groups = 13.03157895
ss within groups = 73.6
the numbers are actaully
WHITE BLACK HISPANIC ASIAN
6 4 7 8
8 1 3 3
2 5 5 5
4 2 4 1
6 6 7