Field and Lawson (2003) reported the effects of giving children aged 7-9 years positive, negative or no information about novel animals (Australian marsupials). This variable was called 'Infotype'. Each child received all three types of information about different animals. The gender of the child was also examined. The outcome was the time taken for the children to put their hand in a box in which they believed either the positive, negative, or no information animal was housed. Which of the following is the most appropriate method to analyse their data? One-way independent ANOVA One-way repeated-measures ANOVA Two-way mixed ANOVA

Three textbooks have a mean weight of 18.1 (3) pounds, with a standard deviation of 1.15 pounds. A cardboard shipping box has a mean weight of 0.52 pounds with a standard deviation of 0.14 pounds. What are the mean and standard deviation of the weight of a shipping box packed with three textbooks? Mean \( =18.62 \quad \) S.D. \( =[?] \) Round to \( ] \)

Confidence Intervals - Proportions An interactive poll found that 347 of 2,394 adults aged 18 or older have at least one tattoo. (a) Obtain a point estimate for the proportion of adults who have at least one tattoo. (b) Construct a \( 95 \% \) confidence interval for the proportion of adults with at least one tattoo. (c) Construct a \( 99 \% \) confidence interval for the proportion of adults with at least one tattoo. (d) What is the effect of increasing the level of confidence on the width of the interval?

On a survey of 100 people, only 38 claimed a favorable opinion of the news media in the United States. Write this ratio as a percentage. \( \square \)

The mean weight of a pair of shoes is 780.00 g with a standard deviation of 62.00 g . The mear weight of an empty shoe box for a pair of shoe: is 45.00 g with a standard deviation of 4.70 g . What are the mean and standard deviation of the weight of a shoe box with a pair of shoes inside? Mean = [?] S.D. \( ] \) [ \( ] \)

What is a scatter plot?