Fill in the Blank. (1 point each) 1. gathers, sorts, summarizes, and displays the data. The quantitative data that can take on any value within an interval and are usually measurements is called 3. is the fraction or percentage of a sample that has certain characteristics. 4. An is a point estimate that does not consistently underestimate or overestimate the population parameter. 5. A stande normal distribution is a distribution with a mean of and standard deviation of 6. Find the critical tvalue for a 95% condence interval with 24 degrees of freedom 7. The range for the middle 50% of the data is called 8. What is the area under the standard normal distribution between one and three standard deviations below the mean? 9. What is the probability ofa 2 value zl.43? 10. In a -tailed test, the signicant level is divided equally between the two tails. (one, two, neither) Decide whether each statement is true or false. (1 point each) 11. Descriptive statistics helps researchers make generalizations about large populations by using data from a sample of a population. (T/F) 12. Bar charts are usually used to represent categorical variable. (T/F) 13. The data value that represents the median is greater than the data value that represents the 1st quartile. (T/F) 14. If a population follows the t- distribution with large n, the shape of the distribution of sample means is left skewed. (T/F) 15. The mode is more resistant measure of central tendency than the mean. (T/F) Circle the best answer for each of the following: (1 point each) 16. 02 is often used to estimate the of a population. a) Median b) Mean c) Mode d) Standard Deviation e) Variance 17. The manager of an orchard expects about 70% of his apples to exceed the weight requirement for "Grade A" designation. At least how many apples must he sample to be 90% confident of estimating the true proportion within 14%? A) 19 B) 23 C) 356 D) 89 E) 505 18. In a random sample of 150 drunk drivers, 91 percent were males. The 99 percent confidence interval for the proportion of drunk drivers who are male is (A) (0.8716, 0.9484) (B) (0.8542, 0.9725) (C) (0.8641, 0.9559 (D) (0.8555, 0.9645) 19. Assume that 25% of students at a university for referees wear contact lenses. We randomly pick 200 students. What is the probability that more than 28% of this sample wear contact lenses? (A) 0.752 (B) 0.680 (C) 0.496 (D) 0.504 (E) 0.164 20. Use the given sample data to construct the indicated confidence interval for the population mean. n = 12, x = 23.8, s = 5.6 Find a 99% confidence interval for the mean. (A) (18.80, 28.80) (B) (18.68, 28.80) (C) (18.68, 28.92) (D) (18.78, 28.82) (E) (19.41, 28.19)