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Q:

Find the mean, median, and mode of the following set of data:

43, 46, 47, 47, 51, 54, 59, 50

Q:

Becky Drinks her super coffee from Starbucks which contains 200mg on caffein. If the amount of caffein in a persons bloodstream decreases by 25% per hour, how much caffein will be in Becky's bloodstream after 7 hours? Round to the nearest whole number.

Q:

A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high school seniors. The study found a confidence interval for the mean score to be between 520 and 554. What is the margin of error on the survey? Do not write on the margin of error.

Q:

Tristan has a box of toys. Four out of $$100$$ toys are red, $$0.52$$ of the toys are green, and $$0.1$$ of the toys are blue. Write the color of toys in order from greatest to least.

Q:

The speed in miles per hour of each of Sam's last ten pitches were recorded as follows: $$\{82, 78, 83, 80, 75, 82, 79, 80, 83, 81\}$$, Find the variance. Round your answer to the nearest hundredth.

Q:

Bao knows he scored inn the $$64\mathrm{th}$$ percentile on a test, and that there were $$400$$ people in total taking the test. How many people had a lower score than him?

Q:

$$3$$$$4$$$$4$$$$5$$$$5$$$$3$$$$2$$$$4$$$$6$$$$3$$$$6$$$$4$$$$2$$

State the mode.

Q:

Lily is a traffic engineer who is investigating the number of vehicles that travel on a certain point of expressway each day. She places a traffic counter in one direction of the expressway for 14 days. The number of vehicles counted each day are provided in the accompanying table.

Lily says that she can model the data for the number of vehicles per day to a normal distribution because the distribution is symmetric. Explain whether Lily's statement is correct, and if not, correct the statement she made.