STA2023 Exam #2
Sean is collecting data on lap swim time. What type of data is this?
The table below shows a probability density function for a discrete random variable X, the number of coffee cups an employee brews at an office coffee machine per day. What is the probability that X is 3?Provide ...
1). Sean is collecting data on lap swim time. what type of data is this?
Ans: continuous quantitative
2). The table below shows a probability density function for a discrete random variable x, the
number of coffee cups an employee brews at an office coffee machine per day. what is the
probability that x is 3?provide the final answer as a fraction.
Ans: 1/16
3). A casino features a game in which a weighted coin is tossed several times. the table shows
the probability of each payout amount. to the nearest dollar, what is expected payout of the
game?
Ans: 177
4). A random sample of math majors taking an introductory statistics course were surveyed
after completing the final exam. they were asked, "how many times did you review your final
exam before handing it in to the professor?" the results are displayed in a probability density
function for the random variable x, the number of times students reviewed their exam
before handing it in. find the standard deviation of x. round the final answer to two decimal
places.
Ans: STD = 2.64 times
5). Identify the parameter p in the following binomial distribution scenario. a basketball player
has a 0.463 probability of making a free throw and a 0.537 probability of missing. if the
player shoots 17 free throws, we want to know the probability that he makes no more than 6
of them (consider made free throws as successes in the binomial distribution). do not
include p in your answer.
Ans: 0.463
6). Given the plot of normal distributions a, b and c below, which of the following statements is
true? select all correct answers.
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