If the 70th percentile for a set of exam scores is 82, what does this mean?

1- If the 70th percentile for a set of exam scores is 82, what does this mean? A) At most 82% of the exam scores are smaller in value than 70 B) At most 70% of the exam scores are smaller in value than 82 C) At least 70% of the exam scores are larger in value than 82 D) At least 82% of the exam scores are larger in value than 70 2- Six executives were asked what their base salary was for the previous year, the results are as follows, in $100,000: (for all answers do not include x$100,000) 3, 15, 2, 1, 4, 5 Calculate the mean base salary for these 6 executives: 

Calculate the median base salary for these 6 executives (round to 2 decimal place) 

If the standard deviation is 5.1, calculate the variance (round to 3 decimal places)  In this situation, which seems to be a better measure of central tendency, median or mean? 

3- For a particular sample of 80 scores on a chemistry exam, the following results were obtained: Mean = 68 Mode = 74 Standard Deviation = 11 Range = 52 First Quartile = 58 Third Quartile = 84 What percent of the exam scores were between 58 and 84? A) 75% B) 68.2% C) 25% D) 50% 4- Sixty-two percent of drivers in a major city admit to having talked their way out of a speeding ticket. If a group of 6 drivers were selected at random from this city, what is the probability that exactly 5 of the 6 would admit to having talked their way out of a speeding ticket? (round to 3 decimal places, enter as 0.xxx)  answer? In another city 70% of drivers admitted to talking their way out of a speeding ticket. If a group of 12 drivers were selected at random from this city, what is the probability that 4 or less would admit to having talked their way out of a speeding ticket? (round to 4 decimal places and use the binomial tables in your textbook, enter as 0.xxxx)  answer?