Find the proportion of the respondents who said that closing local papers would hurt civic life a lot.

According to recent data, 12 percent of people are left handed. In a sample of 20 people, how many would you expect to be left handed? Give the exact number.

A software company is interested in improving customer satisfaction rate from the 54% currently claimed. The company sponsored a survey of 164 customers and found that 101 customers were satisfied.

A group of researchers want to investigate the academic performance of the college students in Bulacan in their statistics subject. There are 12,000 students. If they set the margin of error at 5%. How many students will they need to take the sample.

A survey was administered to 1000 Broward college students. 30% of the respondents indicated that they prefer online classes over face to face classes. How many respondents stated they prefer online classes over face to face classes?

A drug company claims that an allergy medication causes headaches in 5% of those who take it.A medical researcher believes that more than 5% of those who take the drug actually get headaches.   Identify the population(s): All individuals who take the medication. The proportion of those who take the drug who get a headache. What is the variable being examined for individuals in the population(s)? Whether or not an individual who does not take the drug gets a headache. Whether or not an individual takes the correct dosage of the drug. Whether or not an individual who takes the drug gets a headache. Is it categorical or quantitative? [Proportions are Categorical. Mean values are Quantitative.] Categorical Quantitative Identify the parameter(s): The proportion of those who take the drug who get a headache. The mean amount of medication taken. The number individuals who take the medication. What kind of hypotheisis test is this? 1 population mean 2 population means 2…

A software company is interested in improving customer satisfaction rate from the 74% currently claimed. The company sponsored a survey of 113 customers and found that 90 customers were satisfied.

A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national parks. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4%?

A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased.  In the local area there are three main retailers: W-Mart, Tag, and URToy.  For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. Compute the percentage of variance explained by the group differences for these data. Q: Percentage and variance explained = ?

What is the percentage of students weighing less than or equal too 203 pounds