As the saying goes, any man should accomplish three things in his life: build a house, plant a tree, and raise a child. Let us concentrate on the second part for now. A certain gardening magazine conducted a survey to determine how many people have planted a tree in their life. The results stated that 13%of the respondents have planted at least one tree.  QUESTION: For the margin of error to be 1%, how many people should be surveyed? Round up to the nearest whole number, if necessary.

All the question is there, is not incomplete

Is the average time to complete an obstacle course different when a patch is placed over the right eye than when a patch is placed over the left eye? Eight randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 41 49 48 47 41 49 48 49 Left 39 47 50 49 39 50 48 47 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer v| Select an answer v H: Select an answer v Select an answer v| Select an answer b. The test statistic ? : (For intermediate statistics, to 1 decimal place. Then show your test…

Henry took a number of mathematics and science quizzes. His average in all quizzes is 85. Also, his average in the mathematics quizzes is 89 and his average in the science quizzes is 83. What is the ratio of the number of mathematics quizzes to the number of science quizzes taken by Henry? (Hint: Use the trial- and –error method.)

randa A survey was given to a sixth-grade class asking students if they wanted to have an after-school dance club. Three out of every four students said yes. Name: Problem 1 a. What fraction of the sixth-grade class responded yes? b. What percent of the sixth-grade class responded yes? Use the double number line below to model the situation. 2 3

1. The owners of Expo Company John Smith and Susan Jones invested $240,000 and $160,000 into the business respectively. What percentage of the business does Susan own? 2.  5/7 and 2/7 expressed as a ratio is 3.  250 college students were surveyed about if they liked the food choices offered by the cafeteria. 140 people said that they did like the choices offered. What percentage of the students like the food offered?

The formula for sample proportion is                                  p̂=??p̂=Xn Solve for n.

20% of the 35 students in Mr. Box’s class enjoy eating broccoli. How many students like broccoli?

The brand manager for a brand of toothpaste must plan a companion to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 95% confident that his estimate is within six percentage points of the true population percentage?

According to a Mobile Marketing Company's survey of 2000 people, 60% said that they use their mobile phones to play games.  If a 1-prop Z interval test is used to predict the true proportion of all people who use their mobile phones to play games, what would the value of X be? It it ...  a. 600 b. 1200 c. 60 d. 2000