An anatomy teacher hypothesizes that the final grades in her class are distributed as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. If at the end of the semester she has the following grades was...

An anatomy teacher hypothesizes that the final grades in her class are distributed as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. If at the end of the semester she has the following grades was...

A game at the fair involves ping-pong balls numbered 1 to 18. You can win a prize if you correctly choose the 5 numbers that are randomly drawn. What are your chances of winning?

50,51,53,54,55,55,57,57,59,62,62,63,63,65,66

2,3,4,5,x

Consider the following data set with 10 observation 4,6,6,7,11,13,15,16,x. Find 3 values of x for which mean equal mode

I need to graph the correlation somehow but I don't know what to make my axis

Q1=26 and Q3= 76 and skewness =0.2 then find median

a. Twenty sacks of grain weigh a total of 1,003 lbs. what is the mean weight per sack? b. Can the median weight per sack be calculated based on the information give? If not, construct...

A table of some of the relative frequencies computed from a data set is x| 1 2 3 4 ———————— f/n| .3 p .2 ...

A data set contains n=20 observations. The values x and their frequencies f are summerized in the following data frequency table.... X| -1 0 1 2 ——————— f| 3 a 2 1 the frequency of the value 0 is...

What is the 95% confidence interval for the proportion of all adult office workers who have worn a Halloween costume to the office at least once? What is the margin of error, using...

Determine the Mean and Standard Deviation of the following data set: 1 1 2 4 4 6 7 7 Please show formula and explain each step...

1) A survey from the Department of Motor Vehicles was given to local residents in the city of Slothville. The results showed that 60% held a valid driver's license. Of the individuals who held...

want to know discrete and continuous

Refer to the data set of times, in minutes, required for an airplane to taxi out for takeoff, listed below. Find the mean and median. How is it helpful to find the mean? 35 ,42 ,41...

What is the area under the normal curve between the mean and a piece of data with a z-score of -1.24?

What is the area?

what is the percentage?

Please help!

Tested random sample of 158 cell phone batteries. Mean lifetime was 2.7 hours standard deviation of 0.2. Lifetimes apprx. Bellshaped. Estimated number of batteries with lifetimes between 2.5 hours...