Question

In: Statistics and Probability

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 population variance. Calculate the population standard deviation using part (c): (3 points) The sample standard deviation is the square root of the sample variance. Calculate the sample standard deviation using part (d): __________ (15 points) What is the difference between the population standard deviation and the sample standard deviation? When do you use each one? Write at least five good sentences in answering this question. (17 points) What did you do differently between calculating the variance and the standard deviation? What does each measure? Write at least five good sentences in answering this question.

Solutions

Expert Solution


Related Solutions

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
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...
Data from a random sample of 11 gravid female iguanas, including their postpartum weights and the...
Data from a random sample of 11 gravid female iguanas, including their postpartum weights and the number of eggs each produced, were collected. (1): Construct a two-way scatter plot for “female mass” against the “number of eggs” and on a separate graph construct a two-way scatter plot for “female mass” against log of the “number of eggs”. Looking at the two graphs you plotted, explain as to which of these two do you consider to be closest to a linear...
Suppose you want to buy Amazon stock if and only if you can buy it for...
Suppose you want to buy Amazon stock if and only if you can buy it for less than $3100/share. The kind of order you should place today if it is trading at $3164/share is a: Select one: a. Limit order b. Market order c. Stop-loss order d. Fungible order
Suppose you want to invest in a mining operation. You know the total mass of four...
Suppose you want to invest in a mining operation. You know the total mass of four ore deposits, the percent of that deposit that is a mineral containing iron (Fe), and the chemical formula for the mineral: Deposit A contains 31,000,000 tons of ore containing 26% sidererite [FeCO3] Deposit B contains 16,000,000 tons of ore containing 63% magnetite[Fe3O4] Deposit C contains 67,000,000 tons of ore containing 25% hematite [Fe2O3] Deposit D contains 46,000,000 tons of ore containing 30% limonite [FeO(OH)]...
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...
what is accounting ? I want in numeric defintion. Please write only if you know. otherwise...
what is accounting ? I want in numeric defintion. Please write only if you know. otherwise please pass to other expert. If it is wrrong i will downvote . Plase dont copy pas chegg answers
You want to know whether left handed athletes weigh more or before. You can only find...
You want to know whether left handed athletes weigh more or before. You can only find 5 of them. You have have to assum and for this problem you will assume that they are a single random smape from a normal population. Before After 175 180 127 120 210 240 195 192 110 112 Test the claim that the weiht of the left hnaded athletes does not chnage from before to after their season. Be sure to give both hypothesis(Ha...
Suppose you want to know if different dosages of caffeine affect students’ performance on a test....
Suppose you want to know if different dosages of caffeine affect students’ performance on a test. We randomly sampled 15 college students and randomly assigned them to three conditions. Group 1: Very large dose of caffeine Group 2: Moderate dose of caffeine Group 3: Placebo (no caffeine) The table below displays these 15 students’ scores. Group1 Group 2 Group 3 15 26 10 16 25 9 14 23 9 13 20 6 12 21 6 Calculate SSB, SSW, SST, MSB,...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT