Elementary Statistics need help ASAP

posted by .

Measures of Central Tendency
Be sure to show your work so that partial credit may be awarded.

4. An MM207 statistics class surveyed 24 students to find out how many hours they spent doing homework during the previous week.

10 11 10 8 10 10 15 12 10 8 13 11
11 13 10 11 13 10 11 12 11 13 12 8

a. Calculate the mean for these data. (Round to 2 decimal places)

b. Determine the median for these data

• Elementary Statistics need help ASAP -

Measures of Variation

Be sure to show your work

5. A placement test has a mean of 65 and a standard deviation of 2. A histogram of the data shows that the distribution is bell-shaped. Using the Empirical Rule, what two values have about 95% of the curve between them?

• Elementary Statistics need help ASAP -
• Elementary Statistics need help ASAP -

A survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20 – 29 age groups, the heights were normally distributed, with a mean of 69.7 inches and a standard deviation of 3.0 inches. A study participant is randomly selected.
Find the probability that his height is less than 68 inches

Similar Questions

1. statistics health care

Why are measures of central tendency essential to descriptive statistics?
2. statistics/probability

give a brief note of the measures of central tendency together with their merits and demerits. which is the best measure of central tendency and why?
3. Statistics

28. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed 144 students. The statistics …
4. statistics

Measures of Central Tendency,variability, and postion 12th Grade math class. organize the data 78,67,95,85,84,86,82,75,85,94,91,57,78,77,88,90,91,86,84,82,75,58,73,75. Then do 4 columns of Grades,Deviations,Squares,and Z-Scores
5. statistics

I'm stuck on a question in MM207... Assume you want to estimate with the proportion of students who commute less than 5 miles to work within 2%, what sample size would you need?
6. Statistics

Select a random sample of 30 student responses to question 6, "How many credit hours are you taking this term?
7. Statistics

Select a random sample of 30 student responses to question 6, "How many credit hours are you taking this term?
8. statistics

Assume that you are preparing a report on MM207 statistics students at Kaplan University to present to the Kaplan Board of Trustees. Prepare an appropriate graphical representation for each of the following variables. a) The different …
9. math

find an advertisement for a weight loss product either online or in the print media, the more unbelievable the claims, the better a. What data does it offer for its promised benefits?
10. statistics

You are part of a school and have to report the results of standardized test scores. Which measure of central tendency would you use?

More Similar Questions