A university claims that the average SAT score of its incoming students is at least 1200. A concerned student group believes that the average SAT score is actually less than 1200. You randomly select 50 students and find that the average SAT score is 1180 with a standard deviation of 100. You want to test whether the average SAT score is significantly less than the claimed 1200. Is this a left-tailed, right-tailed, or two-tailed test? 

Determine whether the data set is a population or sample. All climbers who were injured while climbing in national parks in 2024

Determine whether the data are qualitative or quantitative. Time to complete a route: e.g., 6 minutes

Identify whether the statement describes inferential statistics or descriptive statistics.A researcher surveys 300 climbers and concludes that “Most climbers in the U.S. prefer sport climbing over trad climbing.”

A city in the Pacific Northwest recorded its highest temperature at 73 degrees Fahrenheit and its lowest temperature at 22 degrees Fahrenheit for a particular year. Use this information to find the class width if you wish to construct a frequency distribution with 9 classes. (Remember for class width, we always round up to the next whole number, no matter what the decimal)

Identify whether the statement describes inferential statistics or descriptive statistics. A climbing gym posts a chart showing the number of climbers attending each day for the past month.

Determine whether the data set is a population or a sample. 500 trad climbers who responded to an online gear brand satisfaction survey

Identify the data set’s level of measurement. Climbing difficulty rating (Yosemite Decimal System): Class 1 (easy hiking) to Class 5.15 (very difficult climbing)

Describe the shape of the data in this histogram: 

Provide an appropriate response.Use the ogive below to approximate the cumulative frequency for 10 hours.