Advanced Placement (AP) College

Directions: Preview the following passage, and answer the question that follows. Orcas: In Danger of Becoming an Endangered Species Orcas, also known as “Killer Whales,” are the largest members of the oceanic dolphin species. They are found in all of the world’s oceans, from the cold waters of the Arctic and Antarctic regions to warmer, tropical seas. Although Orcas are not an endangered species, some local populations are considered threatened or endangered due to pollution, depletion of prey species, conflicts with fishing activities and vessels, habitat loss, and whaling. Based on your preview of the passage above, what do you predict the rest of the text will be about? Will it be: a. An explanation of the reasons why Orcas are in danger b. A history of Orcas bred in captivity c. A description of the hunting techniques of Orcas d. all of the above

Answers

Answer 1

Based on your preview of the passage above, what do you predict the rest of the text will be about the option that is correct is a. An explanation of the reasons why Orcas are in danger.

How an orca ever killed a blue whale?

The orcas -- stated withinside the take a look at as "killer whales" -- endured to assault their prey for 20 minutes, even as the person blue whale was "slapping and swiping its tail," as a protection mechanism, the studies said. The % killed the whale inside an hour of being spotted.

A pod of orcas has been found looking and consuming the planet's biggest animal – the blue whale – off the coast of Australia. Biologists have posted the primary observations of orcas looking and consuming a person blue whale, the most important animal ever to have existed.

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Related Questions

consider the following hypothesis test, H0, U greater than or equal to 20, Ha less than 20, a sample of 50, provided a mean of 19.4 population standard deviation is 2, compute the value of of the test static, what is the p-value,

Answers

Based on the calculations, the value of the test statistic and p-value are equal to -2.1213 and 0.0169 respectively.

Given the following data:

Standard deviation = 2.Sample mean = 19.4.Number of sample = 50.Hypothesized mean = 20.

How to compute the test static?

Mathematically, the value of the test statistic can be computed by using this formula:

[tex]Z=\frac{\bar{x}\;-\;\mu}{ \frac{\sigma}{\sqrt{n} } }\\\\Z=\frac{19.4\;-\;20}{\frac{2}{\sqrt{50}}}\\\\Z=\frac{-0.6}{0.282842 }[/tex]

zₓ = -2.1213.

From the z-table, the p-value is given by:

P(Z < zₓ) = P(Z < -2.1213)

P(Z < -2.1213) = 0.0169.

Since the p-value is equal to 0.0169 less than α = 0.05, we would reject H₀ : µ equal to 20. Thus, we would conclude that µ < 20.

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