An employment information service claims the mean annual salary for senior level product engineers is $98,000. The an salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At a = 0.05, test the claim that the mean salary is $98,000. Complete parts (a) through (e) below. Assume the population is normally distributed. GEEH 100,631 82,584 102,396 91,048 Annual Salaries 96,366 93,544 112,664 - 74,136 77,080 80,920 76,114 104,068 103,964 82,043 84,995 110,356

Find the mean, the median, and the mode(s), if any, for the given data. Round noninteger means to the nearest tenth. (If there is more than one mode, enter your answer as a comma-separated list. If an answer does not exist, enter DNE.) 27, 31, 20, 46, 36, 6, 55, 11 mean      median      mode(s)

Use the hourly rates on the right (rounded to the nearest whole dollar) for 35 support employees in a private college to complete the frequency distribution and find the grouped mean. Complete the class frequency table below. Class interval 6-10 11-15 16-20 21-25 26-30 Total Class frequency ☐☐☐☐☐☐ Midpoint 8 13 18 23 28 $15 $25 $15 $17 $25 $15 $7 $10 $7 $13 $13 $18 $17 $16 $15 $7. $16 $18 $24 $19 $17 $15 $12 $29 $10 $11 $27 $17 $12 $13 $12 $14 $11 $12 $8

These data are the number of on-campus burglaries reported in a given year for nine western Pennsylvania universities. 16 10 4 16 9 8 12 5 16 For the above data set, find the mean, median, midrange, and mode. Round to one decimal place, if necessary.