I can't understand why the data is the percentage of surveyed parents.

The number of regular season wins for 10 college football teams in a given season are given below: 15 5 13 | 1 2 10 15 4 7 What is the population variance? Simplify your answer. Round to the nearest hundredth as needed.

The 18 faculty members in a college Economics department range in age from 32 to 68 as presented in the step plot below. If the oldest faculty member retires and is replaced by a 26-year-old, the median age will: 324899 403569 534789 9 638 O decrease by 2 years. O stay the same. O increase by 2 years. increase by 4 years.

A statistics class is made up of 12 men and 18 women. What percentage of the class is​ male?

A survey of 2,510 golfers showed that 311 of them are​ left-handed. Find a point estimate for​ p, the population proportion of golfers that are​ left-handed.     A. 0.11   B. 0.124   C. 0.141   D. 0.876

Five pulse rates are randomly selected from a set of measurements. The five pulse rates have a mean of 68.6 beats per minute. Four of the pulse rates are 74, 70, 51, and 93. a. Find the missing value. b. Suppose that you need to create a list of n values that have a specific known mean. Some of the n values can be freely selected. How many of the n values can be freely assigned before the remaining values are determined? (The result i referred to as the number of degrees of freedom.) a. The missing value is beats per minute. (Type an integer or a decimal. Do not round.) b. Select the correct choice below and fill in the answer box to complete your choice. (Type an expression using n as the variable.) OA. Of the n values, OB. Of the n values, O C. Of the n values, (...) can be freely selected because the remaining value(s) can be expressed in terms of the assigned values and the known mean. can be freely selected because the remaining value(s) can be expressed in terms of the mean,…

Erin is married to Glen Mills. Erin earns an income of 500. Glen earns 400. Glen and Erin live with their two dependent children who earn no income. Vaughan lives alone and earns an income of 100. 1. Statistics Canada would report the variance in income for this population is equal to? 2. Statistics Canada would report the range of incomes for this population is equal to?

A study is planned to compare the proportion of teenagers (ages 13–19) who dislike anchovies with the proportion of young adults (ages 20–30) who dislike anchovies. A random sample of 41 teenagers was taken, and 78% of them disliked anchovies. A random sample of 56 young adults was also taken, and 71% of them disliked anchovies. Difference = Teenagers - Young Adults The picture below is the question. Use the information above to help.