A medical researdcher wishes to determine if there is a relationship between the number of prescriptions...
A manager wishes to determine whether there is a relationship between the number of years her sales representatives have been with the company and their average monthly sales. The table shows the years of service for each of her sales representatives and their average monthly sales (in thousands of dollars). Compute the linear correlation coefficient between the two variables and determine whether a linear relation exists. A manager wishes to determine whether there is a relationship between the number of...
A biologist wishes to determine if there is a relationship between temperature and the number of chirps per second of crickets. Below is the data of 15 crickets at various temperatures. Chirps/sec Temperature 20 88.6 16 71.6 19.8 93.3 18.4 84.3 17.1 80.6 15.5 75.2 14.7 69.7 17.1 82 15.4 69.4 16.2 83.3 15 79.6 17.2 82.6 16 80.6 17 83.5 14.4 76.3 Then the linear formula is: Chirps =___+___ *Temperature
A manager wishes to determine the relationship between the number of miles (in hundreds of miles) the sales representative travels per month and the amount of sales (in thousands of dollars) per month. The Z-scores for both variables are shown below. Miles: -0.98 -0.77 0.70 0.07 0.28 1.75 -0.77 -1.19 0.91 Sales: -1.14 -1.07 0.62 0.02 0.13 -0.02 -0.50 -0.24 2.20 What is the correlation coefficient? 0.632 0.561 0.717 0.791
A manager wishes to determine the relationship between the number of miles (in hundreds of miles) the manager's sales representatives travel per month and the amount of sales (in thousands of dollars) per month. Find the test statistic. Miles traveled, x= 2, 3, 10, 7, 8, 15, 3, 1, 11 Sales, y= 31, 33, 78, 62, 65, 61, 48, 55, 120 Group of answer choices 1.89 22.062 2.16 .632
A manager wishes to determine the relationship between the number of miles (in hundreds of miles) the manager's sales representatives travel per month and the amount of sales (in thousands of dollars) per month. Find the standard error of estimate, se, given that y=3.53x + 37.92 Miles traveled, x= 2, 3, 10, 7, 8, 15, 3, 1, 11 Sales, y= 31, 33, 78, 62, 65, 61, 48, 55, 120 Group of answer choices 5.122 10.569 22.062 15.951
An instructor wishes to determine if there is a relaionship between the number of absences from his dlass and a student's final grade in the course. What is the explanatory variable? O The instructor's point scale for attendance O Final Grade O Absences O Student's performance on the final examination
Part A A marketing manager wishes to determine whether a relationship exists between the number of cereal boxes (Y) sold at the company's retail store and the number of clerks on duty (X) per day. The sample data below will be used to examine this empirical problem. Calculate the slope of the regression line. X Y 3 4 2 4 2 2 1 2 a. 0 b. 1 c. 2 d. None of the above Part 2 Calculate the Y-intercept...
tiONS and bata Researchers are studying the relationship between honesty, age, and self-control conducted an experiment on 160 ages of 5 and 15. The researchers asked each child to toss a fair coin in private and to record the outcome (heads or tails) on a paper sheet, and said they would only reward children who report heads. Half the students were explicitly told not to cheat and the others were not given any explicit instruction s. Differences were observed in...
0 A study investigating the relationship between age and annual medical expenses randomly samples 100 individuals in a city. It is hoped that the sample will have a similar mean age as the entire population Complete parts a and b below. a. If the standard deviation of the ages of all individuals in the city is = 11find the probability that the mean age of the individuals sampled is within two years of the mean age for all individuals in...
tiONS and bata Researchers are studying the relationship between honesty, age, and self-control conducted an experiment on 160 ages of 5 and 15. The researchers asked each child to toss a fair coin in private and to record the outcome (heads or tails) on a paper sheet, and said they would only reward children who report heads. Half the students were explicitly told not to cheat and the others were not given any explicit instruction s. Differences were observed in...