What z-score value separates the highest 70% of the scores in a normal diatribution from the lowest 30 O 04 O as2 O 052 O O4

write two numbers with mean 8 and variance 4?

The number of goals for each of a hockey player's seasons is given in the following figure. Find the mean, median, and mode of the number of goals per season for the hockey player. (If more than one mode exists, separate your answers with commas. If an answer does not exist, enter DNE.) mean      45       median            mode              Season Goals 1979-80 51 1980-81 55 1981-82 92 1982-83 71 1983-84 87 1984-85 73 1985-86 52 1986-87 62 1987-88 43 1988-89 54      Season Goals 1989-90 43 1990-91 41 1991-92 31 1992-93 16 1993-94 38 1994-95 11 1995-96 23 1996-97 25 1997-98 23 1998-99 9

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find the gemetric mean of 2 and 20

In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Number of ninth graders (Frequency) Mean Test Score High School Glenwood 82 262 Central 92 311 Lincoln 67 168 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 82, 92, and 67, whic incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place 80.3. Of course, that is Mean of all ninth grader's scores *

Suppose there are 5 students in a room. The mean age is 19.8 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? O The mean and median increase. The mean increases, and the median either increases or stays the same. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same. The mean increases, and the median stays the same. The median increases, and the mean either increases or stays the same.

What is the one-sample t-test for the mean? WRite it in words and formulas.

I need help filling in the following blanks based on the attached table: The median frequency of attendance is [Blank]. This means [Blank] percent of people in this sample attend [Blank] or less. The 36th percentile is [Blank]. That means [Blank] percent of people in the same area attend [Blank] or less frequently. The 65th percentile is [Blank]. That means [Blank] percent of people in the same area attend [Blank] or less frequently. frequently.

Find the mean, the median, and the mode of the folowing salaries of emptoyees of the Moe D. Lawn Landscaping Company. (If an answer does not exist, enter DNE.) mean median $ mode Salary $23,000 $29,000 Frequency $30,000 2 $45,000