A school survey has 300 students: 120 walk to school, 90 attend North campus, and the table shows commute by campus. What is the expected count for walkers at North campus?

A clinic table has 400 visits: 150 are follow-up visits, 80 are morning visits, and the table shows visit type by time. What expected count belongs in the follow-up-and-morning cell?

A farm study has 210 seed trays: 84 use the hybrid variety and 75 are in the east greenhouse. What is the expected count for hybrid trays in the east greenhouse?

A sports survey has 200 athletes: 60 play soccer and 50 are seniors. Using the two-way table, what is the expected count for senior soccer players?

In a 240-student club survey, 96 students are in a club and 110 students are in grade 11. What expected count goes in the in-club-and-grade-11 cell?

A factory table has 180 parts: 45 were made on the night shift and 64 need rework. What is the expected count for night-shift parts needing rework?

A library survey has 350 books checked out: 70 are mysteries and 90 are checked out by grade 9 students. What is the expected count for mystery books checked out by grade 9?

A candy maker claims bags are 25% red, 35% blue, and 40% green. The table shows the observed candy color counts for a random bag of 120 candies. What expected counts are used for red, blue, and green?

A library claims checkouts are 40% fiction, 25% nonfiction, 20% graphic novels, and 15% poetry. In a sample of 80 checkouts, what are the expected counts in that order?

A website claims visits come from 60% phones, 30% laptops, and 10% tablets. A random sample has 150 visits. What expected counts should be used for phone, laptop, and tablet visits?

A cafeteria claims side choices are 20% fruit, 50% salad, and 30% soup. In a sample of 90 lunches, what expected counts are used for fruit, salad, and soup?

A seed company claims 70% of seeds germinate and 30% do not. A test plants 50 seeds, with observed counts 32 and 18. What expected counts are used for germinate and not germinate?

For the student job survey shown in the table, a chi-square rule requires every expected count to be at least 5. Is the condition met?

A music app claims 20%, 30%, and 50% of streams are pop, rock, and hip-hop. The table shows 32 sampled streams. A chi-square rule requires every expected count to be at least 5. Is it met?

For the club survey shown in the table, a chi-square test is being used. If every expected count must be at least 5, is the condition met?

A garden shop claims seed packets sell in four types at 10%, 20%, 30%, and 40%. The table shows the observed counts for a random sample of 60 packets. If every expected count must be at least 5, is the condition met?

At a school fair, a table compares booth type with grade for 240 students. For the games-and-grade-10 cell, observed count is 18, row total is 60, and column total is 80. Why is 18 not the expected count?

In a factory table of 200 inspected parts, the repair-needed row total is 75 and the Line A column total is 40. A student reports 40 as the expected count for repair-needed parts on Line A. What error was made?

A zoo claims reptile checkups are 15% lizards, 25% snakes, and 60% turtles. For 80 checkups, a student writes expected counts of 15, 25, and 60. What is wrong?

A bus-rider table has 180 riders. Route A has row total 75, the afternoon column total is 54, and a student averages Route A's three observed counts to get 25 for the Route A afternoon expected count. Why is 25 wrong?