Smart phone: Among 251 cell phone owners aged \( 18-24 \) surveyed, 109 said their phone was an Android phone. Part: \( \mathbf{0 / 3} \) Part 1 of 3 (a) Find a point estimate for the proportion of cell phone owners aged 18 - 24 who have an Android phone. Round the answer to at least three decimal places. The point estimate for the proportion of cell phone owners aged \( 18-24 \) who have an Android phone is

Three textbooks have a mean weight of 16.40 pounds, with a standard deviation of 2.20 pounds. A cardboard shipping box has a mean weight of 0.74 pounds with a standard deviation of 0.13 pounds. What are the mean and standard deviation of the weight of a shipping box packed with three textbooks? Mean = [?] S.D. \( \quad \) [ \( ] \)

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. \( ] \) [ \( ] \)

The mean weight of a pair of shoes is 878.00 g with a standard deviation of 49.00 g . The mean weight of an empty shoe box for a pair of shoes is 73.00 g with a standard deviation of 6.60 g . What are the mean and standard deviation of the weight of a shoe box with a pair of shoes inside? Mean = [?] S.D. \( =[\square \)

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. \( \square \)

What is a scatter plot?