What is the average salt content of seawater as measured in parts per thousand (ppt)

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Answer 1

Answer: 35 ppt. That is how much salt is in sea water

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A marine biologist wants to estimate the average weight of a population of dolphins living in a certain region of the ocean. The biologist will collect a random sample of dolphins and use the sample weights to create the estimate Which of the following is an appropriate method for the biologist to use for inference to the population? A A one-sample t-interval for a population mean B A one-sample t-interval for a sample mean C A one-sample 2-interval for a population proportion D A matched-pairs t-interval for a mean difference E A two-sample t-interval for a difference between means Log in to add comment jordanmcdevitt8545 is waiting for your help. Add your answer and earn points. Expert-Verified Answer 5 people found it helpful joaobezerra Genius 27.1K answers 196.2M people helped Answer: A A one-sample t-interval for a population mean Step-by-step explanation: The biologist will collect a random sample of dolphins and use the sample weights to create the estimate. In a confidence interval, we take the data from the sample and want to estimate it for the entire population, so t Get more Answers for FREE Snap questions with the app, get community help, find expert textbook explanations, and see instant step-by-step math solutions. Why am I seeing this? By creating an account, you accept the Brainly Terms of Service⬈(opens in a new tab) & Privacy Policy⬈(opens in a new tab). Already have an account? Log in by watching video 5.0 (3 votes) Advertisement Still have questions? Get more Answers for FREE Snap questions with the app Get help from the community Find expert explanations for textbooks View instant step-by-step math solutions Already have an account? Log in You might be interested in mariammazen2000 asked 04/05/2020 : Concerning the sampling distribution of the sample mean: • Generate a population consisting of 6 observations representing students’ scores in a certain course. Select a sample of 2 observations. 1. Prove that the mean of the sample mean equals the population mean. 2. Prove that the variance of the sample mean equals the population variance divided by n. 3. Construct a 95% confidence interval for the population mean. See answers (1) miqb24 asked 05/07/2020 A sociologist is studying the social media habits of high school students in a school district. The sociologist wants to estimate the average total number of minutes spent on social media per day in the population. A random sample of 50 high school students was selected, and they were asked, "How many minutes per day, on average, do you spend visiting social media sites?" Which of the following is the most appropriate inference procedure for the sociologist to use? A one-sample z-interval for a population proportion A A one-sample t-interval for a population mean B A matched-pairs t -interval for a mean difference C A two-sample z-interval for a difference between proportions D A two-sample t-interval for a difference between means See answers (2) 4.2/5 7 hiyalol2973 asked 03/10/2020 A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation is σ = 15. a. Compute the 95% conﬁdence interval for the population mean. b. Assume that the same sample mean was obtained from a sample of 120 times. Provide a 95% conﬁdence interval for the population mean. c. What is the eﬀect of a larger sample size on the interval estimate? See answers (1) 2 miqb24 asked 04/25/2020 Researchers are studying two populations of sea turtles. In population D, 30 percent of the turtles have a shell length greater than 2 feet. In population E, 20 percent of the turtles have a shell length greater than 2 feet. From a random sample of 40 turtles selected from D, 15 had a shell length greater than 2 feet. From a random sample of 60 turtles selected from E, 11 had a shell length greater than 2 feet. Let pˆD represent the sample proportion for D, and let pˆE represent the sample proportion for E. Question 2 (b) What are the mean and standard deviation of the sampling distribution of the difference in sample proportions pˆD−pˆE ? Show your work and label each value. (c) Can it be assumed that the sampling distribution of the difference of the sample proportions pˆD−pˆE is approximately normal? Justify your answer. (d) Consider your answer in part (a). What is the probability that pˆD−pˆE is greater than the value found in part (a)? Show your work See answers (1) 5/5 12 New questions in Mathematics helppp need aswer soon A cylinder has a radius of 3 cm and a height of 6 cm. Use the formula V cylinder. Round your answer to the nearest whole number if you don't know this circumference but you do know that 75% of the circumference is 6 in what would circumference be Quantitative data can be ___ O discrete O continuous O discrete or continuous O none of the above 13. If 30% of the pupils in a school are boys, what percentage of the pupils are girls? Pls help me find the surface are and volume Previous Next Ask your qu

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The appropriate method for the biologist to use for inference to the population is A) A one-sample t-interval for a population mean.

What occurs in one-sample t-interval?

In this situation, the biologist wants to estimate the average weight of a population of dolphins living in a certain region of the ocean. The biologist will collect a random sample of dolphins and use the sample weights to create the estimate.

Therefore, the appropriate method for inference to the population is to use a one-sample t-interval for a population mean. This method is used when we want to estimate the population mean using a sample mean and the standard deviation of the sample. The t-interval takes into account the uncertainty of the estimate due to the random sampling process, which makes it an appropriate method for this situation.

Learn more on one-sample t-interval here: brainly.com/question/30798499

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The correct question is:

Which of the following are most responsible for the success of the cane toad as an invasive species in Australia?A) venom glands and varied diet

B) varied diet and prolific reproduction

C) prolific reproduction and strong hind legs

D) strong hind legs and venom glands

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The right option is A) venom glands and varied diet

The venom glands and varied diet are most responsible for the success of the cane toad as an invasive species in Australia.

The cane toad is a big terrestrial toad usually used as pest control against the cane beetle. The cane toads have a toxic skin and venom glands behind their eyes that secrete toxins. The toxins kill animals when it is ingested. The cane toads also have a varied diet. They consume various types of materials such as household garbage, plants in addition to the usual preys of reptiles and birds.

A
The venom glands on the toads prevent them from being successfully predated upon and their varying diet allows them to sustain themselves in diverse environments

Body weight in kilograms divided by height squared in meters yields A. the obesity index. B. the body mass index. C. relative weight. D. percent body fat.

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Answer:

Body Mass Index

Explanation:

Compare and contrast the traits and growth patterns of opportunistic versus equilibrium populations. Provide one example of each.

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In an opportunistic population, growth pattern is exponential.The populations are regulated by density-independent factors. Organisms produce plenty of gametes because the chance for fertilization is very low. The examples of the opportunistic population are insects, corals, oysters, etc.

In an equilibrium population, growth pattern is logical. The populations remain near carrying capacity. Organisms have much fewer offspring and take care of them. The examples of the equilibrium population are birds, mammals, and some fish.

According to thw big bang theory of the orgin of the universe the universe has expanded from a hot dense state into a vast, cooler state. What would be considered scientific evidence supporting this theory

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The scientific evidence is that the distant galaxies are moving away from us at a very high speed. This gives us an idea that the universe was once joint and suddenly exploded after the big bang and started to expand at a speed faster than light.

In What types of environments would you find protists

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water enviroments like fishpools, ponds, your toilet...

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Which statement describes natural selection? It is the primary mechanism for evolution. It must act on structural traits. It acts to cause overpopulation. It causes learned skills to become heritable traits.