Please select the right options. for question 7 just write up part needed.

An experimenter measures the acidity level (pH of some soil samples taken from different cornfields, and also records the height of the corn grown in each field. Drag and drop to indicate which is the dependent and independent variable.A market researcher surveys the population, asking individuals the amount of product they would buy at different prices. Drag and drop to indicate which is the dependent and independent variable. A Medical Scientist administers a drug to a patient and then at different times measures the amount of drug that is present in the bloodstream. Drag and drop to indicate which is the dependent and independent variable. An economist demonstrates the value of replacing equipment by plotting a graph which shows how the running costs of the machine change as it gets older. (Hint: what would you plot on the horizontal axis, and what would you plot on the vertical axis.) Drag and drop to indicate which is the dependent and independent variable. A scientist investigates the relationship between the circumference of an athlete's biceps and the athlete's ability to perform a lift test. Drag and drop to indicate which is the dependent and independent variable. Drag the definition to the correct graph image. D E F G Moderate positive correlation Moderate negative correlation Strong positive correlation Strong negative correlation Weak positive correlation No correlation Weak negative correlationA researcher is investigating the effect of working in air-conditioned buildings upon general health. She records the following data. The Scatter plot is shown below. days std: vs. hours worked in air conditioning What kind of onrrelalion does this plot have? 0 3. Weak negative correlation O h. Moderate positive correlation O 1:. Weak positive correlation Q d. No correlation o e. Strong negative correlation O f. Moderate negative correlation Q g. Strong positive correlation Use the same information provided in Question 7. Suggest some other factors which may have caused the workers to take sick leave. Write at least 4 suggestions. The research nishes her experimental report by concluding that air-conditioning is the cause of poor health. Is she correct to say 'is the cause' cf poor health? Write a short statement (at least 20 words) stating {with some reasons) whether you agree or disagree with her statement. An eight-sided die has faces which are numbered 1 to 8. The venn diagram below shows the overlap of 'numbers less than 5' and 'odd numbers'. Event A Event B numbers less than 5 numbers that are odd N H 5 6 4 3 8 these numbers are neither Calculate the probability that when you roll the die, the result is an odd number AND less than 5. O a. 00 | O b. O C. O d.A bag of coloured marbles contains: . 3 white marbles . 4 blue marbles . 3 red marbles Two marbles are drawn out in succession (one after the other), without any replacement, and the colours noted. Find the probabilities of the following events: Two white marbles are drawn out Choose... A white marble is drawn first, followed by a blue marble Choose... + A red marble is drawn first, followed by white marble Choose...This tree diagram shows the sample space for tossing 2 coins simultaneously. H H H H T HT H TH 'r