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Which of the following compounds is most acidic?    a. I b. II c. III d. IV e. I & IV

The left side of the heart receives oxygenated blood from the lungs through the:

Which of the following compounds contain an aromatic ring?    a. I b. II c. III d. IV e. Both III & IV

Mental function often begins to decline within ___ year(s) before death.

What is the correct Lewis dot structure for C?     a. I b. II c. III d. IV e. V

Suppose 95% C.I for the passengers boarding flight, to get  affected by Covid-19 out of every 100 passengers is 3.8 < p < 12.35.    At CVG the airport authorities wanted to check if a particular flight has less than 2-3 affected passenger out of a 100. What would their decision be based on the information provided above?   [Decision] the [type] hypothesis which is [Hypothesis]

Extra Credit Suppose a park ranger wishes to collect some data from the State Park she works in to asses if the proportion of trees in the park that are in need of pruning is significantly higher than 5%. She will test the hypotheses : 

95% C.I. for population standard deviation is 0.98 <

The mean pulse ​ (in beats per​ minute) adult males is equal to 69 bpm. For a random sample of 127 adult male selected randomly after a workout , the mean pulse rate is 69.2 bpm and the standard deviation is 11.2 bpm. The null hypothesis is  H0 : population mean [NullHypothesis] and the value of the test statistic is  [Value]. 

The following is a sample of 15 IQ scores: 125, 140, 85, 96, 105, 115, 95, 135, 115, 120, 85, 75, 105, 100, 115   QUESTION: What is the point estimate for the standard deviation?