Find the value of the test statistic. (Round your answer to three decimal places.)What is the p-value? (Round your answer to four decimal places.)p-value=What is your conclusion?Reject Ho. We conclude that the population proportions are not equal in each location.Do not reject H. We cannot reject the hypothesis that the population proportions are equal in each location.Do not reject H. We conclude that the population proportions are not equal in each location.Reject Ho. We cannot reject the hypothesis that the population proportions are equal in each location.(b) Does it appear that differences in agricultural contaminants found at the four locations altered the fish population by gender?O Yes, there is evidence that differences in agricultural contaminants found at the four locations altered the fish population by gender.No, there is no evidence that differences in agricultural contaminants found at the four locations altered the fish population by gender. A researcher in a university's biology department studied the effect of agriculture contaminants on the stream fish population in northeastern Indiana. Specially-designed traps collected samples of fish at each of four stream locations. A research question was "Did the differences in agricultural contaminants found at thefour locations alter the proportion of the fish population by gender?" Suppose observed frequencies were as follows.Stream LocationsABCDGender53 48 53 43Female 37 42 32 40(a) Focusing on the proportion of male fish at each location, test the hypothesis that the population proportions are equal for all four locations. Use a 0.05 levelof significance.MaleState the null and alternative hypotheses.O Ho: All population proportions are not equal.H: PAPPc PoOHO PA PB Pc PoH: Not all population proportions are equal.O Ho: Not all population proportions are equal.HPA Pe Pc PoOH PAPc PoH: All population proportions are not equal.

Answered: Image /qna-images/answer/48f618a4-0d13-4c08-a0b9-b3f6996f264e.jpg

Answered: A researcher in a university's biology…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question 19
Consider the following scenario and answer the questions below: The ornithologist decided to investigate the effect of temperature on the migration of North American birds. Develop a hypothesis in the appropriate format. Identify the independent variable. Identify the dependent variable. Plan an investigation (what would she do to collect data?). Did she engage in basic science or applied science? Explain. Did she engage in inductive or deductive reasoning? Explain
Analyze the data and write a short report. Your report must contain A frequency distribution of respondents’ age, gender and race. Age Frequency 17 6 18 6 19 5 20 3 Gender Frequency Female 9 Male 11 Race Frequency African 6 Chinese 2 Indian 12 Tables showing the total average consumption of the three types of foods and the two types of drinks. Food Total Consumption Percentage African 36 46.15% Chinese 32 41.03% Indian 10 12.82% Drinks Total Consumption Percentage Juice 44 60.27% Water 29 39.72% Cross-tabulation of the respondent’s Age and sex with drink preference. JUICE Sex Total Age Female Male 17 1 3 4 18 2 2 4 19 1 0 1 20 3 0 3 TOTAL 7 5 12…
Researchers Holdgate et al. (2016) studied walking behavior of elephants in North American zoos to see if there is a difference in average distance traveled by African and Asian elephants. They put GPS loggers on 33 African elephants and 23 Asian elephants and measured the distance (in kilometers) the elephants walked per day. The data in the file below Elephants contains results that are consistent with what the researchers found: Species Distance: African 6.12 African 3.65 African 4.26 African 3.8 African 5.23 African 5.02 African 5.17 African 5.37 African 4.89 African 6.4 African 6.42 African 6.85 African 3.38 African 7.71 African 4.02 African 3.52 African 5.81 African 5.83 African 7.02 African 6.11 African 4.62 African 5.54 African 3.2 African 5.49 African 5.47 African 6.97 African 3.74 African 3.04 African 7.84 African 8.62 African 7.63 African 5.25 African 4.19 Asian 1.39 Asian 2.59 Asian 8.03 Asian 7.93 Asian 0.33 Asian 8.22 Asian 6.95 Asian 2.39 Asian 3.89 Asian 10.53 Asian…
For each of the following epidemiological scenarios, draw a DAG that represents the relationships between the variables: A researcher is studying the association between experiencing childhood abuse (A) and the occurrence of depression (D) as an adult. She has reason to believe that alcohol consumption (C) may mediate the relationship between (A) and (D).
A survey collected data on annual credit card charges in seven different categories of expenditures: transportation, groceries, dining out, household expenses, home furnishings, apparel, and entertainment. Using data from a sample of 42 credit card accounts, assume that each account was used to identify the annual credit card charges for groceries (population 1) and the annual credit card charges for dining out (population 2). Using the difference data, with population 1– population 2, the sample mean difference was d = $870, and the sample standard deviation was s,= $1,125. (a) Formulate the null and alternative hype to test for no difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out. 0> Prt :°H 0 = Pri :ºH O O Ho: Hdso H: H=0 (b) Calculate the test statistic. (Round your answer to three decimal places.) What is the p-value? (Round your answer to four decimal places.) Can you conclude that the population…
Kindly answer question d) , e) and f)
Doctors at a technology research facility randomly assigned people to use computer keyboards in two rooms. In one room a group of people typed a manuscript using standard keyboards, while in the other room a second group of people typed the same manuscript using ergonomic keyboards to see if those people could type more words per minute. The table shows the resulting data. Standard Ergonomic Words per Words per minute minute 12 43 38 35 21 35 28 69 18 58 45 52 40 36 42 37 52 38 19 47 24 46 63 58
1. A researcher is interested in studying if male smokers and female smokers smoke a different number of cigarettes each day. She takes a sample of 10 male smokers and 10 female smokers from a nearby motorcycle club by asking the first 10 smokers of each gender she encountered. Their results are recorded below. Male 18 25 30 16 24 32 15 27 19 15 Female 12 15 36 30 12 18 34 22 10 12 Answer the following: a. Explain why a scatter plot is not an appropriate graph to analyze this data. b. Make appropriate graph(s) that can be used to compare the samples. Using the graph(s) to explain: does it appear that the number of cigarettes smoked by each gender are different? c. To run a formal test, which test will you run and which distribution will you use? Explain. Are there any concerns you have about using the results of this test?

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