Chapter 5
Chapter 6
Chapter 7
Random
100
What is the probability of someone is female given they have a sports car? (Round to 2 decimal places)
P(Female | sports car) = ______
45/84 = 0.54
100
Out of 10 assignments, this is how many B’s the class have.
What is the probability that the class has 7 or more B’s, P(7 or more B’s)? (Provide 4 decimal places)
0.908
100
Explain why 19.6 ounces is the statistic.
On Tuesday, the bottles of Arizona Iced Tea filled in a plant were supposed to contain an average of 20 ounces of iced tea. Quality control inspectors sampled 50 bottles at random from the day’s production, these bottles contained an average of 19.6 ounces of iced tea.
19.6oz = statistic since it was sampled from 50 bottles
100
When is Ms. Higi's office hours?
Mon Tues 3:30-4
200
What is the probability of someone is female given they have a SUV car? (round to 2 decimal places)
P(_________ | ____________) = _______
135/156 = 0.87
200
Out of 10 assignments, this is how many B’s the class have.
What is the probability that the class has more than 7 B’s, P(more than 7 B’s)? (Provide 3 decimal places)
0.809
200
A researcher would like to find the mean wingspan of a certain bird species (which is 15.9 inches). She collects a random sample of 50 birds, measures the wingspan of each bird, and finds that the mean wingspan is 15.6 inches.
15.9 inches = parameter
15.6 inches = statistic since it was sampled from 50 birds
200
What is Ms. Higi's fiance's name?
JACOB
300
What is the probability of someone not being in the environmental club given they never used a snowmobile? (Round to 2 decimal places)
445/657 = 0.68
300
Find the expected value of this data. (Provide 3 decimal places)
8.128
300
On a New York–to–Denver flight, 8% of the 125 passengers were selected for random security screening before boarding. According to the Transportation Security Administration, 10% of passengers at this airport are chosen for random screening.
10% = parameter
8% = statistic since it was sampled from 125 passengers
300
When did Ms. Higi graduate high school? (For reference, i am 25 years old)
2015
400
Find the probability that someone is in a liberal arts degree if we already know (given) they got an A. (Round to 2 decimal places)
2142/3392 = 0.63
400
Each child of a particular set of parents has probability 0.25 of having type O blood. Genetics says that children receive genes from each of their parents independently. If these parents have 5 children, the count X of children with type O blood is a binomial random variable with n = 5 trials and probability p = 0.25 of success on each trial.
P(X = 0) The probability of none of the children having type O.
P(X = 1) The probability of one of the children having type O.
Prob for both 0.25
Trials for both 5
Number of success (x) is 0 and 1
400
Mu of x bar = 25
Sigma of x bar = 2.2
10% condition -> 10*10= 100 and yes we can have more than 100 adults
400
What is Ms. Higi's WORST school subject?
HISTORY!! (half points if you say English cuz i suck at spelling)
500
Consider the two-way table. Define events:
E: the grade comes from an Engineering and Physical Science class
T: the grade is lower than a B
Find P(E|T)=__________ (round to 2 decimal places)
800/3656= 0.22
500
Use z=(x-mu)/sigma to find the zscore and use the z-table that Ms. Higi will pass out now to finally probability of someone being between 68 and 70 (subtract their final probabilities)
0.05623
500
Mu of x bar = 225
Sigma of x bar = 18.97
10% condition -> 10*10= 100 and yes we can have more than 100 songs since he has 10,000
500
What zodiac sign is Ms. Higi? (Hint: Ms. Higi's bday is in the fall semester)
Scorpio