Median is the middle term when the data is arranged in ascending order.
1, 9, 11, 22, 29, 35, 40, 46
There are 8 data values
Median = (n+1)/2 th value
= (8+1)/2 = 4.5th value
= average of 4th and 5th value
= (22 + 29)/2
= 25.5 yr
The ages (in years) of the eight passengers on a bus are listed below. 9 1...
Do the Academy Awards involve discrimination based on age? Listed below are the ages of actresses and actors at the times that they won Oscars in the Best Actress and Best Actor categories. the ages are listed in order, beginning with the first Academy Awards ceremony in 1928. (Note: in 1968 there was a tie in the Best Actress category, and the mean of the two ages is used; in 1932 there was a tie in the Best Actor category,...
Inferences from Two Samples chapter Listed below are the ages of actresses the awards ceremony, but the ages in and actors at the times that they won the table below are based on the birth Oscars for the categories of Best Actress date of the winner and the date of the and Best Actor. The ages aze listed in awards certmony) chronological otder by row, so that cor- responding locations in the two tables Analyzing the Results are from the...
Find the regression equation, letting the first variable be the predictor (x) variable. Using the listed actress/actor ages in various years, find the best predicted age of the Best Actor winner given that the age of the Best Actress winner that year is 58 years. Is the result within 5 years of the actual Best Actor winner, whose age was 44 years? Best Actress 27 31 30 64 34 32 46 29 61 22 43 53 Best Actor 41 38...
A random sample of 24 professors at Montana State University gave the following ages (years) 29 32 56 61 27 43 38 65 36 47 41 68 59 40 33 35 44 39 28 46 42 62 58 45 (a) Give the five number summary including the low value, Q1, median, Q3, and high value. (b) Make a box-and-whisker plot for the data. (c) Find the interquartile range.
A random sample of 24 professors at Montana State University gave the following ages (years) 29 32 56 61 27 43 38 65 36 47 41 68 59 40 33 35 44 39 28 46 42 62 58 45 (a) Give the five number summary including the low value, Q1, median, Q3, and high value. (b) Make a box-and-whisker plot for the data. (c) Find the interquartile range
The U.S. Census Bureau collects data on the ages of married people. Suppose that eight married couples are randomly selected and have the ages given in the following table. Determine the 90% confidence interval for the true mean difference between the ages of married males and married females. Let d=(age of husband)−(age of wife). Assume that the ages are normally distributed for the populations of both husbands and wives in the U.S.: Husband: 75 41 62 38 53 27 59...
A store owner surveyed 25 randomly selected customers and found the ages shown (in years). The mean is 27.8 and the standard deviation is 8.72. The owner wants to know if the mean age of all customers is 32 years old. Use the given information to complete parts a through f 30 19 23 26 23 D 31 30 23 11 50 30 20 29 18 24 29 3740 46 35 26 23 22 27 23 a) What is the...
A survey of 25 randomly selected customers found the ages shown (in years). The mean is 33.60 years and the standard deviation is 9.52 years a) Construct a 90% confidence interval for the mean age of all customers, assuming that the assumptions and conditions for the confidence interval have been met. b) How large is the margin of error? c) How would the confidence interval change if you had assumed that the standard deviation was known to be 10.0 years?...
Question 14 The ages of the members of four teams are summarized below. Answer the questions about them Team A: The range of ages is 17 and the mean age is 29. Team B: The range of ages is 11 and the mean age is 32. Team C: The range of ages is 19 and the mean age is 30 Team D: The range of ages is 14 and the mean age is 35. ) Based on the information above,...
The following data set shows the ages of the Best Actress and Best Actor award at a given awards show for various years: Actress Age Actor Age 33 64 31 64 36 54 23 35 34 36 29 67 27 49 25 60 36 45 31 49 29 56 22 67 30 51 37 31 37 38 Using a Sign Test, test the claim that there is no median difference between the ages of Best Actress and Best Actor award...