Suppose you want to know if there is a difference in the average high temperatures in...

Suppose you want to know if there is a difference in the average high temperatures in February 2019 for three different areas. you record the following temperatures randomly for the three cities.

A	B	C
18	-11	14
23	11	23
39	12	40
8	4	21
-4	-2	12

You decide to run a one-way ANOVA test on this data.

A) write down the null and research hypotheses you are testing

B) What are the F- statistic and P value of your ANOVA test? interpret these numbers (explain).

C) What is the conclusion of your hypothesis test with significance of a=0.1?? Explain this conclusion in the context of this problem

D) If you wanted to compare the average temperatures pairwise, how many hypothesis tests would you have to perform (explain)?

E) It turns out the above daily high temperatures were recorded on the 4th, 8th, 12th, 18th, and 26th respectively of all three cities. Does this information change the test you would run? Explain.

Expert Solution

orchestra answered 1 year ago

Suppose you have a system and you know its wavefunction. You want to know a property...

Suppose you have a system and you know its wavefunction. You want to know a property of this system and you know the operator for that property. But sadly, the system’s wavefunction is not an eigenfunction of the operator. Explain how you would calculate a value for the property. Annotations

If you want to know if there is any difference at all in how many people...

If you want to know if there is any difference at all in how many people prefer any of five different salad dressings, you would do what kind of test? Chi square goodness of fit Chi square test of independence Independent sample (simple) ANOVA Repeated measures(matched sample)ANOVA Factorial ANOVA

We want to know whether or not there is a difference in the proportion of A’s...

We want to know whether or not there is a difference in the proportion of A’s in math class received by students who participated in a tutoring program and those who did not participate. There are 40 kids who did the tutoring program and 14 of them got A’s. There are 52 who did not do the tutoring program and 12 of them also got A’s. Apply 2-sided test at 4% SL. What more is needed? This is what we...

Suppose you want to know the variance of the weights of the only five iguanas in...

Suppose you want to know the variance of the weights of the only five iguanas in a particular zoo. You measure their weights to be 8.3, 8.4, 8.6, 9.2, and 9.5 pounds (15 points) What was different between the population variance and the sample variance? Which is bigger? Why is there a need to have a different formula? Write at least five good sentences in answering this question. (3 points) The population standard deviation is the square root of the...

You want to know if, on average, households have more cats or more dogs. You take...

You want to know if, on average, households have more cats or more dogs. You take an SRS of 8 households and find the data below: # of cats # of dogs 2 1 0 1 3 3 2 4 0 0 4 2 0 2 2 1 A) Determine the population(s) and parameter(s) being discussed. B) Determine which tool will help us find what we need (one sample z test, one sample t test, two sample t test, one...

1. You want to know if, on average, households have more cats or dogs. You take...

1. You want to know if, on average, households have more cats or dogs. You take an SRS of 8 households and find the data below. # of cats, 2, 0, 3, 2, 0, 4, 0, 2, and the number of dogs is 1, 1, 3, 4, 0, 2, 2, 1. a) determine the populations and parameters being discussed b) determine which tool will be help us find what we need (one sample z test, one sample t test, two...

A town’s December high temperatures average 46 oF with a standard deviation of 9 oF, while...

A town’s December high temperatures average 46 oF with a standard deviation of 9 oF, while in June the mean height temperature is 75 oF with a standard deviation of 8 oF. In which month is it more unusual to have a high temperature of 64 oF? a. June because the z-score is farther away from zero than for December b. June because the z-score is closer to zero than for December. c. December because the z-score is closer to...

Suppose you want to know if there is any association between soda consumption and obesity in...

Suppose you want to know if there is any association between soda consumption and obesity in children. Think about how you would go about organizing such a statistical study. What steps would you have to take/what items would you need to include in order to get it off the ground? In your statistical study what is the: Population? Parameter? Sample? Sample Statistics? Given the 4 sampling methods that we have discussed, which one makes the most sense in your study?...

Suppose you are thinking about getting a puppy and want to know the amount of time...

Suppose you are thinking about getting a puppy and want to know the amount of time people spend caring for puppies. You survey 31 puppy owners and find that the mean amount of time they spend caring for their puppies is 108.0 minutes per day with a sample standard deviation of 17 minutes. Construct a 98% confidence interval for the mean amount of time puppy owners spend on their puppy per day. Interpret the interval. (1pt) Point Estimate: ______ Margin...

An Analyst wants to know if there was a significance difference in the average of hours...

An Analyst wants to know if there was a significance difference in the average of hours worked in a week from 2000 (Group 1) to 2004 (Group 2). He gathers all the data from the General Social Survey, and lists the following summary statistics from the sampling. Year 2000 2004 Mean 27.34 48.12 Std. Dev 10.11 19.23 Unweighted n 43 54 Source: General Social Survey (sda.berkeley.edu ) What is the correct null hypothesis? Ho: mu2004-mu2000 < 0 Ho: mu2004-mu2000 does...

Question