A school principal claims that the number of students who are tardy to school does not vary from month to month. A survey over the school year produced the following results. Using a 0.01 level of significance, test a teacher's claim that the number of tardy students does vary by the month. Number Aug. Sept. Oct. 18 13 19 Tardy Students Nov. 14 Dec. Jan. 8 Feb. Mar. Apr. May 6 13 11 15 16 Copy Data Step 3 of 4: Compute the value of the test statistic. Round any intermediate calculations to at least six decimal places, and round your final answer to three decimal places.

The following set of data represents the number of orders filled by a national-chain restaurant during a two week period. Construct a five number summary for the the data.   66, 75, 68, 89, 86, 73, 67, 75, 75, 82, 85, 74, 67, 61 (Round to the nearest hundredth, if needed).    Min _________________ Lower Quartile _________________ Median __________________ Upper Quartile _________________ Maximum __________________   What is the range and the interquartile range (IQR)?  Range __________________ Interquartile Range (IQR)  ___________________

Given the following frequency table of values, is the mean or the median likely to be a better measure of the center of the data set? Value Frequency 21 2 42 3 43 8 46 7 49 3 51 1

2. Given the following observations from a sample, calculate the mean, the median, and the mode. 4 0 -6 1 -3 -4

The following refer to the following data set: 50.4 47.5 50.4 23.4 33.7 50.4 39.2 36.4 16.3 21.8   What is the arithmetic mean of this data set? mean = 37What is the median of this data set?median = 37.8What is the mode of this data set?mode = 50.4

Consider the following data set. Round your answers to the nearest hundredth as needed. 38 42 37 28 56 48 47 68 68 68 Mean = ___Median = ___Mode = ___Range = ___

Please answers questions a through d. Thank you!

Consider the following ordered data. 6   9   9   10   11   11   12   13   14 Find the low, Q1, median, Q3, and high.

The second slide is the first part of the question and the first slide is the second part of the question.

The mean number of sick days an employee takes per year is believed to be about 10.5. Members of a personnel department do not believe this figure. They randomly survey ten employees. The number of sick days they took for the past year are as follows: 12; 4; 15; 3; 11; 8; 6; 8; 2; 9. Let x = the number of sick days they took for the past year. Should the personnel team believe that the mean number is ten?