student scored in the 75th percentile on the SAT. What does that mean?

Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th percentile of wait times.

Describe the formula used to calculate a z-score?

I need help with this question.

When dating someone, what matters more to you: looks or personality? This question was the focus of a community college student’s class project for an introductory statistics course. She devised a 25-point scale. An answer of 1 means “personality matters most and looks don’t matter at all.” A score of 25 means “looks matter most and personality does not matter at all.” Her hypothesis is that the mean scores for males and females will differ, but she does not have an opinion about which population will have a higher mean score. Here are her hypotheses. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 She chose a random sample of 10 classes from the schedule at Los Medanos College and distributed surveys in those classes. Survey respondents totaled 170 students: 85 females and 85 males. We used her data to run a hypothesis test for a difference in two population means.  Here are the results: he results:   t df p Cohen's d Gender -4.11 168 0.0000 -0.629   Which conclusion is the most accurate…

Suppose there are 5 students in a room. The mean age is 20.0 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? The mean either increases or stays the same, and the median increases. The median either increases or stays the same, and the mean increases. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same.

A golf pro claims that his mean golf score is 63. A sportswriter wants to test the claim that his mean score is higher 63. Would this be a left-tailed, right-tailed, or two-tailed test?

help with unanswered questions please!

A class has an equal number of boys and girls. The boys all got78% on a test and the girls all got 84%.. What are the mean and standard deviation of thetest scores for the entire class?

find an example of when statistics were misused/skewed and state the reason why you think the statistics were reported that way.