Provide an appropriate response.The repair costs for five cars which were crashed by a safety testing organization were as follows:$100, $150, $200, $250, and $[A]0. Find the mean cost of repair.   Mean cost of repair = $________

Solve the problem.A small computing center has found that the number of jobs submitted per day to its computers has a distribution that is approximately mound-shaped and symmetric, with a mean of 79 jobs and a standard deviation of 5. Where do we expect approximately 95% of the distribution to fall?

Solve the problem.A university was interested in student reaction to a proposal to spend more on athletic scholarships and less on academic scholarships. 35 student athletes were surveyed. What type of problem has occurred?

Solve the problem.As part of an economics class project, students were asked to randomly select 500 New York Stock Exchange (NYSE) stocks from the Wall Street Journal. As part of the project, students were asked to summarize the current prices (also referred to as the closing price of the stock for a particular trading date) of the collected stocks using graphical and numerical techniques. What type of variable is being collected?

Solve the problem.The way in which an interviewer asks a question about political party affiliation causes respondents to answer that they have no affiliation when they actually do. What type of problem has occurred?

Solve the problem.A study was designed to investigate the effects of two variables — (1) a student’s level of mathematical anxiety and (2) teaching method — on a student’s achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 290 with a standard deviation of 50 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 99.7% of the students score?

The bar graph shows the number of tickets sold each week by the garden club for their annual flower show.Approximately how many tickets were sold during week 2?

Solve the problem.A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $370 ,000 with a standard deviation of $50,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $270,000 and $470,000?

Solve the problem.The amount of time workers spend commuting to their jobs each day in a large metropolitan city has a mean of 70 minutes and a standard deviation of 20 minutes. Assuming nothing is known about the shape of the distribution of commuting times, what percentage of these commuting times are between 30 and 110 minutes?

Solve the problem.An usher records the number of unoccupied seats in a movie theater during each viewing of a film. Identify the type of data collected.