A study of lawn destroying insects where some yards in a small town were randomly inspected...

A study of lawn destroying insects where some yards in a small town were randomly inspected determined the square footage an infestation of insects could eat per day is displayed in the table below. (Show all work for credit, including calculations and complete parts a) Find all variables( SE, z or t, P-value, p hat, etc)

Grubs	47	54	64	76	88	97
Cinch	55	60	62	91	76	109

Does the difference in samples give us enough evidence to conclude that there is a difference between grub infestation and cinch infestation? Perform a hypothesis test, and state your conclusion.

Solutions

Expert Solution

From the given data

(1) Null and Alternative Hypothesis;

H0: There is no difference between grub infestation and cinch infestation

H1: There is a difference between grub infestation and cinch infestation

i.e.

Thus we conclude that there is no difference between grub infestation and cinch infestation

orchestra answered 2 years ago

Next > < Previous

Related Solutions

. A small town has 5600 residents. The residents in the town were asked whether or...

. A small town has 5600 residents. The residents in the town were asked whether or not they favored building a new bridge across the river. You are given the following information on the residents' responses, broken down by gender: Men Women Total In Favor 1400 280 1680 Opposed 840 3080 3920 Total 2240 3360 5600 A) What is the probability of a randomly selected resident being In a Woman? B) What is the probability that a randomly selected resident...

In a study conducted by some Statistics students, 69 people were randomly assigned to listen to...

In a study conducted by some Statistics students, 69 people were randomly assigned to listen to rap music, music by Mozart, or no music while attempting to memorize objects pictured on a page. They were then asked to list all the objects they could remember. The summary statistics for each group are shown in the table. Complete parts a and b. Rap Mozart No Music Count 33 19 17 Mean 10.74 9.14 11.67 SD 4.34 2.98 4.34 a.Does it appear...

1. A small town has 5600 residents. The residents in the town were asked whether or...

1. A small town has 5600 residents. The residents in the town were asked whether or not they favored building a new bridge across the river. You are given the following information on the residents' responses, broken down by gender: Men Women Total In Favor 1400 280 1680 Opposed 840 3080 3920 Total 2240 3360 5600 A) What is the probability of a randomly selected resident being a Woman? B) What is the probability that a randomly selected...

1. A small town has 5600 residents. The residents in the town were asked whether or...

1. A small town has 5600 residents. The residents in the town were asked whether or not they favored building a new bridge across the river. You are given the following information on the residents' responses, broken down by gender: Men Women Total In Favor 1400 280 1680 Opposed 840 3080 3920 Total 2240 3360 5600 A) What is the probability of a randomly selected resident being a Man? B) What is the probability that a randomly selected resident is...

A study is performed in a small town to determine whether the average weekly grocery bill...

A study is performed in a small town to determine whether the average weekly grocery bill for a four-person family is significantly less than national average of $185. A simple random sample of 19 weekly grocery bills for four-person families is selected from the town. The data is shown to the right. They suspect from the sample data that the small town's average grocery bill is less than the national average. That is, they want to test the hypotheses: Ho:...

1. In an Anatolian town, 175 people aged 40 and over were randomly selected, of which...

1. In an Anatolian town, 175 people aged 40 and over were randomly selected, of which 54% (.54) were found to be obese. For the mass ratio of people belonging to the mentioned age group in this town if the confidence interval is found as P(0.466<?<0.614), what is the meaning level of the study? 2. A new vaccine has been developed to treat a major disease. 7 patients were randomly identified and vaccinated and it was determined that they recovered...

At a home-and-garden show, randomly selected visitors were asked where they lived and where they normally...

At a home-and-garden show, randomly selected visitors were asked where they lived and where they normally shopped for their garden care products. garden shop discount store supermarket TOTAL Urban 11 20 15 46 Suburban 27 20 12 59 Rural 12 26 24 62 Total 50 66 51 167 [a] Fill in the table with the row percentages of each location category. Garden shop discount store supermarket Urban Suburban Rural [b] Write the null and alternate hypotheses for a test of...

A state highway goes through a small town where the posted speed limit drops down to...

A state highway goes through a small town where the posted speed limit drops down to 40MPH, but which out of town drivers don’t observe very carefully. Based on historical data, it is known that passenger car speeds going through the city are normally distributed with a mean of 47 mph and a standard deviation of 4MPH. Truck speeds are found to be normally distributed with a mean of 45MPH and a standard deviation of 6MPH. The town installed a...

) In a study of the effects of caffeine on alertness, 32 subjects were randomly assigned...

) In a study of the effects of caffeine on alertness, 32 subjects were randomly assigned to four groups. These groups were C1: wait-list control (no treatment), C2: placebo control, E1: experimental group 1 (mild caffeine treatment) and E2: experimental groups 2 (high caffeine treatment). Several subjects were not able to complete the study, reducing the group n’s to 7, 5, 6, and 3, respectively. The dependent variable scores were performance scores on a visual-motor task requiring alertness. The results...

TYPE OUT WORK PLEASE Alison lives in a small town where she plans to hire workers...

TYPE OUT WORK PLEASE Alison lives in a small town where she plans to hire workers to help her make candy. Her production function for candy is q= 4LK^0.5 She begins producing with K = 4. The cost of capital is $50/unit. The wage depends on the amount of workers she employs. Specifically, w(L) = 10 + 2L. 1.Does Alison's production function exhibit diminishing marginal return to labor? Explain. 2.What kinds of returns to scale does Alison’s production function exhibit?...

Subjects