John believes that carpenter ants are, on average, angrier than fire ants. A sample of 40...

John believes that carpenter ants are, on average, angrier than fire ants. A sample of 40 carpenter ants gives an average anger level of 11.21 with a standard deviation of 3.11. The sample of 25 fire ants gives an average anger level of 9.27 with a standard deviation of 2. Complete the two-sample (difference of means) hypothesis test.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

John Apple believes her average level of motivation is greater than 8 on her 1-10 scale....

John Apple believes her average level of motivation is greater than 8 on her 1-10 scale. Data set below Alpha = .01 A) Here is the alternative hypothesis Ha;u>8 whats the null hypothesis Ho: B) P value C) Conclusion about Ho D) Is John correct? Time (wks) Time Availability (min) Motivation (1-10) Exercise (min) 1 130 5 120 2 130 7 122 3 130 5 119 4 130 8 121 5 130 7 120 6 130 9 123 7 125...

The kid samples his primary carpenter ants and receives the following 5 measurements: 5mm 8mm 7.3mm...

The kid samples his primary carpenter ants and receives the following 5 measurements: 5mm 8mm 7.3mm 6.8mm 9mm What is the average size in this sample? What is the standard deviation of the sample? Is it feasible that the actual mean of the population is 10 mm. Explain and show your work. (Remember to describe your process and list all resources used.) The kid has a secondary, backup carpenter ant hive. They take the following 6 measurements: 3mm 6.2mm 7mm...

Does the average Presbyterian donate more than the average Catholic in church on Sundays? The 40...

Does the average Presbyterian donate more than the average Catholic in church on Sundays? The 40 randomly observed members of the Presbyterian church donated an average of $24 with a standard deviation of $12. The 54 randomly observed members of the Catholic church donated an average of $17 with a standard deviation of $14. What can be concluded at the α = 0.05 level of significance? For this study, we should use Select an answer The null and alternative hypotheses...

A sample of 40 transistors yielded a sample average saturation current of 9.46 milliamps, with a...

A sample of 40 transistors yielded a sample average saturation current of 9.46 milliamps, with a sample standard deviation of 0.58 milliamps. Give a 95% confidence interval for the true mean saturation current of this type of transistor. Show all work.

Maria believes that the average running time of movies is equal to 160 minutes. A sample...

Maria believes that the average running time of movies is equal to 160 minutes. A sample of 5 movies was taken and the following running times were obtained , 150,155,165,170,185. Assume the population of the running times is normally distributed. Find the p-value at the 95% level of significance

Chapter 4, Section 3, Exercise 116 Lizards and Invasive Fire Ants This exercise addresses lizard behavior...

Chapter 4, Section 3, Exercise 116 Lizards and Invasive Fire Ants This exercise addresses lizard behavior in response to fire ants. The red imported fire ant, Solenopsis invicta, is native to South America, but has an expansive invasive range, including much of the southern United States (invasion of this ant is predicted to go global). In the United States, these ants occupy similar habitats as fence lizards. The ants eat the lizards and the lizards eat the ants, and in...

The baseball commissioner believes that the average attendance is less than 2,300,000 per team. You decide...

The baseball commissioner believes that the average attendance is less than 2,300,000 per team. You decide to conduct a test of hypothesis to determine whether the mean attendance (Attendance Column) was more than 2,300,000 per team. Use the 5% level of significance. Note: We do not know the populations standard deviation. Attendance 2.16 2.97 2.68 2.28 3.05 1.62 3.37 2.30 4.27 1.92 2.67 1.39 2.35 2.36 2.32 2.75 3.25 2.06 2.38 1.37 3.02 3.86 2.87 3.85 3.11 1.75 2.79 3.22...

The average selling price of a smartphone purchased by a random sample of 40 customers was...

The average selling price of a smartphone purchased by a random sample of 40 customers was $308. Assume the population standard deviation was $30. Using a 95% confidence interval to estimate the average selling price in the population ranges from $298.70 to $313.70. Question 3 options: True False

The researcher believes that recent undergraduates from Connecticut have less debt than the national average. Specify...

The researcher believes that recent undergraduates from Connecticut have less debt than the national average. Specify the competing hypotheses to test this belief

The average number of pages for a simple random sample of 40 physics textbooks is 435....

The average number of pages for a simple random sample of 40 physics textbooks is 435. The average number of pages for a simple random sample of 30 mathematics textbooks is 410. Assume that all page length for each types of textbooks is normally distributed. The standard deviation of page length for all physics textbooks is known to be 55, and the standard deviation of page length for all mathematics textbooks is known to be 55. Part One: Assuming that...

Subjects