How many vaccines do older adults get per year? To estimate this quantity, a sample of adults aged 65 and over is selected. Each adult reports how many vaccines they received in the previous year. Which of the following inference procedures should be used?

Researchers are exploring whether blood type is associated with heart disease risk. A sample of adults is selected. Each person’s blood type is recorded as A, B, AB or O and their heart disease risk is classified as low, medium, or high. The results are shown in the table below. Heart Disease Risk Blood Type Low Medium High Total A 92 26 14 132 B 23 11 4 38 AB 10 7 2 19 O 132 21 8 161 Total 257 65 28 350 Use the table below to answer the questions below. Enter your answers as fractions that are not simplified. What is the probability an individual selected from the table has an A blood type? / What is the probability an individual selected from the table has a B blood type and medium heart disease risk? / What is the probability an individual selected from the table has an AB blood type or low heart disease risk? / What is the probability an individual with an O blood type has high heart disease risk? /

A researcher conducted a study to investigate the performance of students on an exam and the number of hours they work for pay each week.  She found the more students work, the lower their exam grades.  The researcher claims that the correlation of -0.91 shows there is a strong causal relationship between work hours and exam performance.  Explain what is wrong with this interpretation.

According to the organelles case study, Nicole’s parents did not have Leigh syndrome, because this disease was described as being __.

School health officials wanted to investigate if there is a relationship between Streptococcus pyogenes carrier status and tonsil size. A sample of 1,500 of schoolchildren were selected at random and each child’s carrier status (carrier or not) and tonsil size (normal, large, very large) were recorded. Which of the following tests should be used? 

Food additives, such as the plant-based extract tara gum, are used in industrial fool preparations as thickening agents to stabilize emulsions and create an impression of thickness and creaminess without adding extra calories.  The effect of tara gum on the viscosity (in millipascal-seconds, mPa.s) of fruit yogurt drinks was assessed for various concentrations of tara gum (in grams per 100 grams of drink, g/100g).  The findings are summarized in the following scatterplot. The relationship between viscosity and concentration can be described as Which one of the following is the best guessed value of the correlation coefficient for the viscosity of the yogurt drink and concentration of the tara gum?

Using the amino acid chart provided, identify the N-terminal amino acid shown below:

Ancient Egyptians believed in a soul called the ‘ka’.

What is NOT TRUE about an irreversible inhibitor?

What item protected Tutankhamun’s face and shoulders?