Nintendo is doing a classical game competition for the anniversary of Super Maria bros. The average runtime for a straight playthrough is 1 hour and 58 minutes. (with standard deviation of 6 minutes). Out of all of the players who compete in this competition (120 players), the fastest 10% will get a chance at a special award. What would be the benchmark playthrough time for this competition?

Abby's score of 704 on the math portion of the 2002 GRE exam placed her in the 84th percentile rank. The standard deviation of this exam was 141. If the test scores are normally distributed, what was the mean score of the 2002 test takers? write your answer with one decimal place.

A poll showed that 55.3% of Americans say they believe that statistics teachers know the true meaning of life. What is the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life.Report the answer as a percent rounded to one decimal place accuracy.

The average life of a car tire is 50,000 miles.  The standard deviation is 2,000 miles   What percent of the tires will last longer than 52,000 miles?   If a tire store purchased 400 tires, how many tires would you expect to last longer than 54,000 miles?

Edit question fast please. The lengths of Atlantic Croaker Fish are normally distributed with mean of 10 inches and a standard deviation of 2 inches. An Atlantic croaker fish is randomly selected. Find the 75th percentile for the length of Atlantic croakers. Write the probability statement followed by the function used on the TI and followed by the probability value. The middle 60% of the length of Atlantic croakers fall between what values. Write the two numbers rounded to 2 decimal places separated by a comma.

Skye High School has a total of 500 graduates.  The mean SAT score of Skye High School graduates is 947 with a standard deviation of 205.  To get into a premier college, a student must score 1000 or more.  If 60 students are selected at random, how many graduates can Skye High School expect to get into a premier college?

Find the 90th percentile. So 10% of the TV sets last more than what length of time?

Find the value of so that 92.3% of the data lies to the right of it.

In a survey, 80% of the voters support a particular referendum.  If 30 voters are chosen, find the standard deviation of the number of voters who support the referendum.

A class has an equal number of boys and girls. The boys all got78% on a test and the girls all got 84%.. What are the mean and standard deviation of thetest scores for the entire class?