A researcher watches popular television shows and records every time someone interrupts a speaker. She wants to understand the frequency of interruption on television. Which statement best describes the type of study the researcher is doing?   an observational study that is a statistical study an experimental study that is a statistical study an observational study that is not a statistical study

A researcher conducts a study comparing anxiety levels in teens based on their social media usage. Teens with higher scores on the anxiety measure are considered more anxious. Below is a table made from their results. Briefly interpret the results by explaining both descriptive and inferential statistics identified.

Question The following dataset represents the number of times students have been late to their math class. 0, 0, 1, 0, 0, 2, 0, 1, 1, 0, 0, 0, 0, 3, 0, 0, 2 Suppose that the last value, 2, was mistakenly recorded as 20. What measure(s) of the typical value in a dataset would be affected by this error? Select all that apply. Select all that apply:

I need help with something regarding this problem.  The National Sleep Foundation recommends that adults aged 18 to 64 get an average of 8 hours of sleep per night. A survey of sleep hours was taken during a Statistics class. The data is listed below:   4, 5, 5, 5, 5.5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10   Do we have enough evidence at the 0.05 significance level to say that statistics students tend to get less sleep than the recommended average of 8 hours per night?   How would I get the degrees of freedom?