Consider Two Future Observatories in Space

question 5

Multiple Choice

Consider two future observatories in space.Observatory X consists of a single 50-meter telescope.Observatory Y is an interferometer consisting of five 10-meter telescopes,spread out over a region 100 meters across.Which observatory can detect dimmer stars,and which one can see more detail in its images? (Assume all else is equal,such as quality of optics,types of instruments,and so on. )

• A)Observatory X can detect dimmer stars and Observatory Y reveals more detail in images.
• B)Observatory Y can detect dimmer stars and Observatory X reveals more detail in images.
• C)Observatory X both detects dimmer stars and reveals more detail in images.
• D)Observatory Y both detects dimmer stars and reveals more detail in images.

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Definitions:

T Test

A statistical test used to compare the means of two groups to determine if they are significantly different from each other.

Mann-Whitney U Test

is a non-parametric statistical test used to compare differences between two independent groups when the dependent variable is ordinal or continuous but not normally distributed.

Chi-Square Test

A statistical test used to determine the significance of an observed association between categorical variables.

R Test

A statistical test used within the R programming environment to determine the significance of data sets or to compare models.