A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 23.1 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 21.1, 26.1, 27.1, 28.1, 25.1, 32.1, and 32.1 pounds. What are the degrees of freedom?   Multiple Choice   7   31.7   6   23.1

NUC 2.72 Active nuclear power plants. The U.S. Energy D Information Administration monitors all nuclear power plants operating in the United States. The table below lists the number of active nuclear power plants operating in each of a sample of 20 states. a. Find the mean, median, and mode of this data set. b. Eliminate the largest value from the data set and re- peat part a. What effect does dropping this measure- ment have on the measures of central tendency found in part a? Data for Exercise 2.72 Number of Number of State Power Plants State Power Plants Alabama 5 New Hampshire 1 Arizona 3 New York California 4 Florida 5 Georgia 4 Illinois 11 Kansas 1 North Carolina Ohio Pennsylvania South Carolina Tennessee Louisiana 2 Texas 6539734 Massachusetts 1 Vermont Mississippi 1 Wisconsin 1 3 Based on Statistical Abstract of the United States, 2012 (Table 942). U.S. Energy Information Administration, Electric Power Annual.

The number of credits being taken by a sample of 13 full-time college students are listed below. Find the mean, median, and mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why. 88 11 11 8 9 77777 7 10 TMV UIG TIHVUG. VGIGLIUIG COITGGL GITVIGG VGIVW aiIU, II TIGL655aiy, mI MUIG QISWGI VUX LU Compitic yoUr GilviG. O A. The mode(s) is/are (Type an integer or decimal rounded to one decimal place as needed. Use a comma to separate answers as needed.) O B. The data set does not have a mode. Does (Do) the mode(s) represent the center of the data? O A. The mode(s) represent(s) the center. O B. The mode(s) does (do) not represent the center because it (one) is the largest data value. O C. The mode(s) does (do) not represent the center because it (one) is the smallest data value. O D. The mode(s) does (do) not represent the center because it (they) is (are) not a data value. O E. The data set does not have a mode.

What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):

Monthly telephone charges for cell phone in the United States are normally distributed with a mean of $62 for a single user. Coach Keefer thinks that leasing smart phones has increased the monthly cell phone bill for a single user. O Ho : µ = 62 H : μ> 62 u > O Ho: µ= 62 Ha : µ# 62 OHo: = 62 Ha: 62 O Ho: p = 62 Ha:µ262 ASUS VivoBook

A random sample of employees participating in a company fitness program were asked how many days they logged an exercise activity in the past month. Their responses are reported in the histogram below.Based on the histogram above, what is the class width? Clas width = ? Days What is the sample size? Sample size = ? employees

31 fast please A manager of a sports club keeps information concerning the main sport in which members participate and their ages. To test whether there is a relationship between the age of a member and his or her choice of sport, 641 members of the sports club are randomly selected. Conduct a test of independence at the 5% level. Sport 18 – 25 26 – 30 31 – 40 41 and over racquetball 40 59 28 44 tennis 58 77 39 64 swimming 74 61 65 32 Group of answer choices There is sufficient evidence to conclude that an individual's sport of choice is dependent on age. There is not sufficient evidence to conclude that an individual's sport of choice is dependent on age. Unable to determine

Sharon is interested in testing the differences between student populations at two different universities. If she randomly selects students from both universities, she is examining _____ sample(s). a. confounded   b. independent   c. single   d. dependent

Choose correct option and explain ty.