A sample of 120 low-income individuals and a sample of 230 high-income individuals were surveyed concerning their opinions on television violence. 68% of low-income respondents believe that TV violence is excessive, compared to 82% of high-income respondents. Test the significance of the difference between proportions of low-income and high-income individuals who feel TV violence is excessive. What does your calculated z equal? (please round to two decimal places for each step of your calculations). O-2.85 1.96 -3.5 4.2

According to this data, what is the "normal range" for creatinine levels? That is, in what range will 95% of healthy individuals' creatinine levels fall? use ( = 0.97 mg/dL, s = .07 mg/dL) Please select the single best answer   .90 - 1.04 mg/dL   .83 - 1.11 mg/dL   .76 - 1.18 mg/dL   .69 - 1.25 mg/dL

A student scored between 81% and 93% on all exams except for one that she failed with a 47% because she studied the wrong chapters. Which value would better represent hertypical performance: mean exam grade or median exam grade? Briefly explain.

The mean of the data set represented by the histogram is 12. What is a reasonable estimate for the​ median? Explain your reasoning

Describe the formula used to calculate a z-score?

Identify the test statistic. x² = 116.97 (Round to two decimal places as needed.)

In a study, the data you collect is Number of traffic tickets. What is the level of measurement?.

I need help with this question.

Which of the three measurements, mean, median, or mode, is the most influenced by an outlier value that is either much higher or lower than the others in the dataset?  Explain how you chose your answer in the space provided below.

You want to estimate the percentage of statistics students who get grades of C or better. How many students should you survey to be 95% confident that the sample percentage is off by no more than 2 percentage points.