Find the percentage of each age group that were observed

Assignment Help Basic Statistics

Reference no: EM131797249

Is Smiling Independent of Age?

Randomly chosen people were observed for about 10 seconds in several public places, such as malls and restaurants, to see whether they smiled during that time.

The table shows the results for different age groups.

a. Find the percentage of each age group that were observed smiling, and compare these percentages.

b. Treat this as a single random sample of people, and test whether smiling and age group are associated, using a significance level of 0.05. Comment on the results.

Reference no: EM131797249

Questions Cloud

Data regarding voter turnout : For the sake of convenience, the data for three of the variables are presented again here along with descriptive statistics and zero-order correlations.

Distributive and integrative issues for deflate gate : What are the distributive and integrative issues for deflate gate.

What rate of return will slashtastic earn on the new model : Saul Hubson has a novel idea to embed diodes into his new model of electric guitars but discovered that Fretlite, Inc. has a patent related to his idea.

Compute the partial correlation coefficient : Compute the partial correlation coefficient for the relationship between support (Y) and years of school (X) while controlling for the effect of years

Find the percentage of each age group that were observed : Randomly chosen people were observed for about 10 seconds in several public places, such as malls and restaurants, to see whether they smiled during that time.

Discuss gain or loss on the early redemption of the bonds : Calculate the gain or loss on the early redemption of the bonds. Round your answer to the nearest whole dollar

Calculate quicker cost of goods completed for may : Quicker Company uses a job order costing system. On May 1, Quicker Company's Work in Process Inventory account shows a beginning balance of $161,000.

Are attendance at preschool and high school graduation : Follow-up studies were done for decades to answer the research question of whether attendance at preschool had an effect on high school graduation.

What is the proportion of men in the population : In a certain population of adults there are twice as many men as women. What is the proportion of men in the population:

User Account

All Pages