Approximate the mean of the grouped data.
The age distribution of students in a statistics class.
Age frequency
20-29 23
30-39 24
40-49 23
50-59 19
60-69 8
What is the mean age of the students based on this given frequency distribution?
Round to the nearest hundredth.
Solution Preview
We can use the average of each age interval to estimate the mean, so we ...
Solution Summary
This Solution contains calculations to aid you in understanding the Solution to this question.
... Determine a 95% confidence interval for the population mean (i) what ... (ii) Using the Poisson approximation to the ... the probability that no one in a group of 120 ...
Normal distribution and normal approximation. ... b) Find the mean and standard deviation for the ... presidential election (based on data from ICR Research Group). ...
... What is the approximate probability that at least 7 rejected boards will be produced next week? ...GROUP A GROUP B mean 79.1 79.1 median 90 81 mode 99 81. ...
... of the country's overall wealth--mean, median, or ... annual income will most closely approximate the normal ... SUMMARY Groups Count Sum Average Variance Control 5 13 ...
... or a "paired" sample) or one group that has been ... when does the t-statistic approximates the z ... pooling” standard deviations or pooling sample proportions mean? ...
... the problem inpart (b) by using the normal approximation to the ... 50 people are randomly selected what is the mean number of left-handed people in such group. ...
...Data that is presented in this manner are known as grouped data. ...mean is 1/2. Area to left of mean is 1/2 ... 4 What is the approximate probability that a data point ...
... week my class covered the average and the standard deviation; the normal approximation for data...Group Cholesterol DL H Question 1: compute the mean,median, mode ...
... Of the group preferring a sports drink, 80 were men and 40 were women ... The sum of the squared deviations about the mean for all the data is approximated - x)2 ...
... W Mean Std Dev Number Number Sets Multiplicity Sum ...Approximation Without Approximation With Exact Probability Continuity Correction ... at autopsy on a group of 11 ...
