A random sample of 50 BCTC students is asked, "Would you rather speak all languages or speak to animals?" After pondering the question carefully, 30 of the students say they would rather speak to animals.

What is the low end of a 95% confidence interval for the proportion of all BCTC students who say they would rather speak to animals? Enter your answer as a decimal rounded to 4 decimal places.

2- A random sample of 50 BCTC students is asked, "Would you rather speak all languages or speak to animals?" After pondering the question carefully, 30 of the students say they would rather speak to animals.

What is the sample proportion of students who say they would rather speak to animals?

3-According to the company that makes Skittles candy, 21% of all Skittles are yellow. However, Damion opens a pack of Skittles and calculates that 29% of his pack are yellow, while Kalynn has 18% yellow Skittles in her pack. Why do the packs of Skittles have different percentages of yellow Skittles?

Population parameter

Margin of error

Standard deviation

Sampling variability

4-The ages of residents in a nursing home, X, are normally distributed with mean = 86 and standard deviation = 4. What is P(X < 83)? Round to 4 decimal places in your answer.

5-An energy company wants to know how Kentuckians feel about the coal industry and its relation to sustainable energy resources. They select a random sample of adults from Lexington and Louisville and ask them, "Would you like to see more sustainable energy resources used in Kentucky in place of coal?"

What is the biggest error with this poll?

The question is worded in a way that makes the coal industry sound bad.

They only asked adults from the two most urban areas, so the respondents don't represent all Kentuckians.

They only asked the question to people from Kentucky and not other states.

The question is worded in a way that makes sustainable energy resources sound bad.

6-