Consider a Situation in Which We Expect the Same Frequency

question 28

Multiple Choice

Consider a situation in which we expect the same frequency of 64 total observations to be in each of four categories. We can use an ?² goodness-of-fit test to test whether the frequencies of offspring are as expected. If the numbers of values in each category are 12, 24, 10, and 18, and using the table of critical values shown, what is the conclusion of our test?
?
$\begin{array}{c}\chi^{2} \text { critical values }\\\text { for } d f=2\\\begin{array}{ll}\text { Sig. level } & \text { Value } \\\hline 0.05 & 7.81\\0.025 & 9.35 \\0.01 & 11.34\end{array}\end{array}$

• A) Fail to reject the null hypothesis, we lack the evidence to decide that the frequencies differ from those that were expected.
• B) Fail to reject the null hypothesis, we have good evidence to decide that the frequencies differ from those that were expected.
• C) Reject the null hypothesis, we lack the evidence to decide that the frequencies differ from those that were expected.
• D) Reject the null hypothesis, we have good evidence to decide that the frequencies differ from those that were expected.

Identify and assess the impact of invasive species in aquatic ecosystems.

Discuss the role of conservation efforts and regulations in preserving marine biodiversity.

Understand the impact of human activities on wetlands and aquatic ecosystems.

Comprehend the approaches and challenges in fauna and flora conservation.

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Definitions:

Return on Investment (ROI)

A measure of the profitability of an investment, calculated as the net profit of the investment divided by the initial cost.

Last Year's

Refers to the previous calendar or fiscal year relative to the current one.

Combined ROI

A metric that aggregates the return on investment (ROI) from multiple projects or investments to assess overall performance.

Investment Opportunity

A potential investment that could yield financial returns, often evaluated for its risk-reward profile.