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In a recent Gallup poll, telephone interviews were conducted with a random sample of 1,018 U.S. adults.  Of those interviewed, 285 said they would spend less on holiday gifts this year than they did last year.  The margin of error was 0.018.  What confidence level did the pollster use?

Computer programs are available that produce “random numbers” which are used in simulation studies of the sampling distributions of statistics.  One researcher used a computer program to generate 100 single-digit integers (0 through 9) and tabulated the frequency with which each occurred.  One concern is whether the computer program could be expected (in the “long run”) to produce equal numbers of each integer.  The table below summarizes the observed and expected frequencies. What is the minimum value of the Chi-Square that would lead to the conclusion that the computer program was defective (that is, P-value < 0.05)?

Why would a programmer want to intentionally raise an exception?

F25_Exam 3_Make-up.pdf

Scalariform conjugation in zygnematalean algae confers advantages including:

The relatively soft and flexible extracellular matrix (ECM) of red algae prevents non-gamete cells from undergoing fusion, unlike in other eukaryotes.

This hormone makes sure that fuel is in the blood and causes skeletal muscle and bone to undergo mitosis and therefore, grow:

  Based on the phylogeny, these groups are monophyletic (select all true statements):

Both the chlorophycean alga Haematococcus and the terrestrial ulvophyte Trentepohlia accumulate red-orange carotenoid pigments, for example astaxanthin, within their cytoplasm. What is the primary function of these pigments in both genera?

Match the alga to its description This heterotrophic genus is known to cause a skin infection in humans and mastitis in cattle. [alga1] This heterotrophic genus infects insects by releasing a filament that penetrates the host’s gut. [alga2] This photosynthetic genus is often an endosymbiont. [alga3] The photosynthetic genus produces lipids and hydrocarbons which have contributed to oil deposits. [alga4]