Please answer all questions clearly. Source needed: https://finance.yahoo.com/quote/PFIZER.NS/history?period1=1606780800&period2=1609372800&interval=1d&filter=history&frequency=1d&includeAdjustedClose=true

2. Write the last two digits of your 1000 student ID number with a decimal point in between these two digits: Assume that this number is the average number of squirrels you come across when you walk from the Life Science Building (LS) to the Engineering Research Building (ERB). Tomorrow you plan to walk from LS to ERB and you wonder what it the probability of observing at most three squirrels. Assume that squirrels are randomly distributed and that each squirrel is an independent observation. NOTE: if your last two digits happen to be both 0, use 4.2 as the average number of squirrels encountered. 3. Write the last digit of your 1000 student ID number: You know that in a specific population of rainbow trout 15% of the individuals carry intestinal parasites. Assume you obtain a random sample of 9 individuals from this population: a. Calculate the probability that _(last digit of your ID number) carry intestinal parasites. b. Calculate the probability that at least two individuals carry intestinal parasites. NOTE: you can still calculate "a" if your last digit is "0."1. 1it"ou will need the same dataset used for problem 3 in homework I (the dataset obtained 'om the yahoo website with the company you selected}. Use Excel to calculate the average and standard deviation of the close data column. Assume that these two numbers represent the population [=parametric) mean and population stande deviation, respectively. for the variable length [in cm} in a population of a species of sh. Attach a printout of the data to your homework and write down the ticker code on it. a. Calculate the probability of sampling at random a sh that is smaller in size than the value you would obtain by subtracting half the standard deviation from the average [it will be equal to: p. [will] b. Calculate the probability of sampling at random a sh that is greater in size than the value you would obtain by adding half the standard deviation from the average [it = u + {of2}] c. Calculate the probability of sampling at random a sh that has a size between the two values [it = p. {org}. x = p + {o used in parts \"a" and \"b," respectively d. Calculate the 25'\" and T3\" percentiles of sh size for the population using the normal distribution table. e. Imagine that 5 individuals are sampled at random from this sh population. Calculate the probability that the average calculated will be less than the value: |.t - (eld) NDTE: Assume the variable is nonnally distributed and use hellnshaged curve diamms to shade the areas that correspond with the answers to questions \"a\" through \"d\