Straighterline Statistics Final Actual
Exam Questions with correct verified
detailed answers latest update 2025
Which type of data would have a discrete probability distribution? ---
correct answer ---Number of children per household in a census
A video game got a thumbs up rating from 400 out of 1000 customer
surveyed. The customers included 250 women. Assuming that gender
does not have any influence on the rating, what is the chance that any
randomly selected participant will be a woman who gave the game a
thumbs up rating? --- correct answer ---10%
A dining guide reviewed all of the restaurants in a town. Only six
restaurants received a four star rating. 17 receive three stars; 18
receive two stars; and nine received a one star rating. Based on this
information, what is the probability of a restaurant receiving a four
star rating? --- correct answer ---0.12
The table shows the likelihood that a team will score a certain number
of touchdowns in a football game. What is the probability that the
team will score at least two touchdowns? --- correct answer ---0.64
, The main score on a college entrance exam is 1200, and the standard
deviation is 100. If the scores are normally distributed, what is the
likelihood of the score greater than 1450? --- correct answer ---
0.0062
What type of distribution is depicted in the graph? --- correct answer
---Normal
A school gives an exam for which the scores are normally distributed.
What proportion of students score within 2.3 standard deviations of
the mean? --- correct answer ---0.98
The mean score for 18 holes of golf on the parkvale municipal course
is 68, with a standard deviation of 12. Low score is 95. What is Z -
score does this correspond to? --- correct answer ---2.25
Damien determines that the difference is he found in his study are
statistically significant at the 0.05 level of significance. What is the
correct interpretation of the finding? --- correct answer ---95% of the
study participants achieve the level of performance expected
Exam Questions with correct verified
detailed answers latest update 2025
Which type of data would have a discrete probability distribution? ---
correct answer ---Number of children per household in a census
A video game got a thumbs up rating from 400 out of 1000 customer
surveyed. The customers included 250 women. Assuming that gender
does not have any influence on the rating, what is the chance that any
randomly selected participant will be a woman who gave the game a
thumbs up rating? --- correct answer ---10%
A dining guide reviewed all of the restaurants in a town. Only six
restaurants received a four star rating. 17 receive three stars; 18
receive two stars; and nine received a one star rating. Based on this
information, what is the probability of a restaurant receiving a four
star rating? --- correct answer ---0.12
The table shows the likelihood that a team will score a certain number
of touchdowns in a football game. What is the probability that the
team will score at least two touchdowns? --- correct answer ---0.64
, The main score on a college entrance exam is 1200, and the standard
deviation is 100. If the scores are normally distributed, what is the
likelihood of the score greater than 1450? --- correct answer ---
0.0062
What type of distribution is depicted in the graph? --- correct answer
---Normal
A school gives an exam for which the scores are normally distributed.
What proportion of students score within 2.3 standard deviations of
the mean? --- correct answer ---0.98
The mean score for 18 holes of golf on the parkvale municipal course
is 68, with a standard deviation of 12. Low score is 95. What is Z -
score does this correspond to? --- correct answer ---2.25
Damien determines that the difference is he found in his study are
statistically significant at the 0.05 level of significance. What is the
correct interpretation of the finding? --- correct answer ---95% of the
study participants achieve the level of performance expected
